Everything. Everything about them. Troons, male and female, have built a subculture that fixates on encouraging/celebrating/elevating the most odious personality traits they can find. It's as if we've encountered real life orcs. The more cruel, the more stupid, the more selfish, the more self-aggrandizing, the more smug a troon is the more other troons idolize it. Everything centers around controlling cluster B personalities, but where normal people discourage (or try to ignore) the associated behaviors, troons get rewarded for acting them out. The simultaneous high they get from making everyone around them walk on eggshells while complaining that nobody treats them normally.
Their incessant need to relate everything back to being a tranny; I've seen Slack channels in the workplace that announce things like "helpdesk will be open these hours". People emoji react to these with thumbs up, thank you....and several dozen tranny flags. Not even the grossest faggy attention-seeking gays do things like that, not nearly with that frequency. I get it, it's one of those tiny things that seems like a nitpick to any disinterested observer, but it's because they do this shit with everything. Every facet of a troon's life becomes about being a tranny. Every bit of an AGP's life conforms to the need to coom and act like the flaming stereotype emotionally unstable bimbo. Every bit of a pooner's life turns into alternating between acting like a caricature of a dudebro and sobbing when it doesn't work. The narcissism, the controlling behaviors, the exhibitionism, the threatening behavior, the derailment of all groups they infiltrate, it's the whole package really.