Each of them is the hero of their own story (a common human condition on its own), but each is also the most abused, disenfranchised, oppressed, powerless, put-upon, beaten down, trodden on person on earth, which is purposely designed to persecute them in particular with laser precision. Every action ever taken on this earth is a "fuck you in particular" aimed squarely at them. Every word ever uttered or written in their presence (whether aimed at them or not) is carefully crafted to be the most insulting, hurtful and oppressive thing ever written by a human being, specifically tailored to harm them in particular. Personally. Individually. By name. With complete hatred and pure malice the sole motivators for the actions and words. Dog whistles and hidden subtexts are everywhere. No action or statement is ever benign, beneficial, helpful or motivated by kindness, love or genuine care.
They are each also the smartest, strongest, kindest, wittiest, best educated, and the most enlightened, clever, knowledgeable, experienced, generous, humble and "impervious" to adversity person who has ever lived. They are functionally perfect and have perfect knowledge of the absolute truth of all things. That perfect knowledge (and their possession of it) is of course immediately obvious to anyone who isn't stupid, and dissent is incontrovertible proof of absolute evil and overt hostility. They immediately see through every ruse, recognize every dog whistle and subtext for what they are, decipher every comment and action to reveal the underlying hate that motivated them, identify all the harm everyone and everything has ever done (and is currently doing) to them and peer directly into anyone's soul to know their true motives, secrets and weaknesses better than they do. They see it all and cannot be harmed by it.
They rise to every occasion, meet every challenge head-on, routinely elicit loud applause by commoners for their powerful actions in public and never buckle under pressure no matter how severe. They have never been bested and every time someone has ever tried to oppose, oppress or hurt them in some fashion (which happens constantly), they stand up for themselves and always vanquish the aggressor with ease. They could fix all the world's problems overnight if they were put in charge and given free reign to rewrite every law, redraw every border, redistribute all the wealth and purge all the undesirables (and burying them in shallow unmarked graves, since they deserve no respect or mercy). The only reason they haven't is they just don't feel like it right now. Soon, though.
They're also terrified to so much as leave their homes because of all the vicious oppression that awaits them in the world. Police frighten them. Their families (who typically provide free lodging, food, internet and emotional/financial support) hate them. Their friends all secretly plot against them and/or aren't nearly as innocent as they seem. The few who hold jobs (and are, naturally, the best, smartest, most efficient and most valuable worker in the company who routinely saves the company from ruin by fixing others' mistakes and doing things so much better than everyone else) endure endless harassment in the office at the hands of the most hateful, incompetent and malicious coworkers, managers and owners imaginable. Anyone they don't know personally is an -ist and -phobe, not to be trusted and likely an active oppressor waiting to pounce at the slightest provocation.
Their preferred environments -- the enlightened, curated internet sites where all -ists and -phobes are instantly banned; "safe spaces" -- are all filled with -ists and -phobes (despite all the bans) who constantly attack them (personally and directly) from every possible direction via every available mechanism, and there is no escape, no refuge, no respite. They are deeply wounded by this endless onslaught. Weakened. Depressed. Exhausted from the constant vigil they must maintain for their own literal safety. In fear for their very lives. Carrying on even the most simple conversation is nigh impossible with the infinite army of trolls waiting to pounce on their every post to dissect their every word to look for excuses to attack them. There is no respite. The mods (who constantly ban people for -isms and -phobics) aren't doing enough to get rid of the -ists and -phobes and are certainly secretly complicit in allowing such rampant abuse to continue.
Despite this, their safe spaces are the finest places on the internet, filled with the best people they've ever known (not as good as themselves, of course, let's not go nuts here) and are the only places they've ever felt welcomed, comfortable and safe. They know they can confide in their friends, admit any problems they're having to solicit valuable advice, and they know they can regale them all with their completely accurate and not at all exaggerated tales of triumph over adversity at the upscale coffee shop, Apple store, upscale bookstore, upscale grocery store, pharmacy and other horrific dens of hatred they're forced to frequent. They know they'll always have the full support of everyone there, and the rare negative remark will be swiftly punished by the mods who love them and the safe spaces they moderate.
They are truly God's -- er, excuse me, science's -- greatest gift to mankind. Their mere presence raises up any place they deign to visit or inhabit. Simply being noticed by them is an incredible privilege. Being paid a compliment by them is a fucking earth-shattering, life-changing experience guaranteed to make things better for you.
They believe all of these things to be true simultaneously despite the obvious contradictions, and they act like it. Everything they ever post is perfect, correct, accurate, honest, powerful, benign, loving, kind and the best possible thing to say at that moment. Seemingly harsh comments that appear to have been posted in anger are simply "tough love," posted with genuine care and affection. Even when they post an apology later on and walk back something they've posted previously, they're just showing mercy and humility like any good messiah would; what they previously posted is still perfect -- you just misinterpreted it and took it too personally.
The result is the stick-up-their-ass posting style you describe. Because they are each the (sole) hero of their own epic story, everything is dramatic and traumatic, triumphant and defiant, heartbreaking and crippling, brilliant and subtle. Nothing in their world is mundane. Nothing they have to say is anything less than the most important thing anyone has ever heard in the history of mankind. You are blessed by their presence and their words, and your every misstep will be called out every time because it must be. How else can you know you have to do/be better? Dealing with you at all is a painful chore and you should feel grateful they bother with you in the first place.
And they make sure to remind everyone of this at every fucking opportunity by writing in the snobbish, perpetually-wounded, passive-aggressive asshole style they're constantly refining in collaboration with their like-minded perfect beings over on Twitter.
