If she thinks abuse victims can't be villains, what about Asterion, Hunter, or N? Why did she downplay the trauma characters like Pearl and Korra went through?
Because original sin. Look to Lily's definition of grey morality, where it's not a character having morals that toe a dubious line between conventional good and evil, but a matter of the audience not yet knowing what the character's morality is. Redemption arcs, which she uses Zuko as an example, is simply a good person realizing that they were a good person all along, not a bad person becoming a good person.
Lily's logic is that all characters are born into a static state on the morality spectrum. Bad guy is always a bad guy and the good guy is always a good guy, what changes, what develops, is whether that state is obvious to the audience or not. Arthas was always a villain, the culling just revealed what he truly was. Sylvanas was always a hero, her bad circumstances and/or bad writing just shrouded that. There are no villains who redeem themselves, just heroes who were misunderstood or had no choice. An abuse victim continuing the cycle of abuse is bullshit because to be an abuse victim they already have to be a good person in the first place, otherwise they were obviously already a bad guy and whether or not they were mistreated would have changed nothing.
I've indulged in way more shitty fanfiction than I'm willing to admit, but Lily's writing is uniquely bad in a way I can't put my finger on.
It's an direct, empty series of notes that have less personality than a wikipedia article. It speaks to a writer who doesn't really want to write scenes, every description is the bare minimum of set up with nothing to actually build towards or say about the story, and the dialogue just the characters turning to the camera and spelling out what the audience is supposed to take away. There's no character to take away, no details, no dynamic, no flow. Its just her essays with speech marks around each point.
Lily doesn't like actual conflict so nothing ever really happens in her stories, anything significant or slightly interesting happens offscreen or in very quick handwavy lines. There's no actual conversation between characters, just one-sided lectures where other characters either snap their fingers in compliance or cry out the strawman arguments of whoever Lily hates that day to be easily demolished.
Lily's writing is those Tumblr posts where they write out quick meme dialogue between characters like it was a chatroom, but stretched out into an actual scene.
A common thing with fanfiction or amateur writing is people using flowery prose to try and make what they're writing seem deeper or more intellectual.
Just because I'm mentally stuck in my teenage years doesn't mean you can to call me out like this.
When did he say that? And for what movie?
Kingsman, the scene where a church sermon and the secret agent infiltrating it are hit with a signal that drives them berserk and the agent kills everybody.
