They're also completely oblivious, much like MTF troons, as to how men actually interact with each other.
This has been one of my bugbears for a long time, even before FTMs became a common thing. If a social group is composed of roughly equal numbers of women and men, it usually functions well. If it's composed entirely of women or entirely of men, it usually functions well. It's when you have a social setting comprised of one sex, which is "invaded" by just a small number of the other sex, that things get fucked up.
A single woman, entering a group of men, becomes as danger to the group's social cohesion. Because she doesn't actually understand how men function, she immediately bristles at the way the men treat one another and demands that they moderate their language and behaviour, to make her feel "safe". The men start competing over her, because men compete, and she sees that as both something to control and something that is threatening - because men often compete in order to mate, so to her mind, if they're competing, then they must want to have sex with her. It all goes down hill from there.
A single man, entering a group of women, is immediately perceived as a threat. It doesn't matter if the group specifically invited him, or how conciliatory he is toward them (and in fact the more conciliatory he is, the more threatening he's perceived to be, because he's "trying to be nice", which creates doubts about his sincerity), he's rightly perceived as an invader into a female space. And of course, there's a high chance that the man in that situation is there for only one reason, which at least some of the women will start to compete over, while others will perceive it as even more of a threat, creating all sorts of divisions within the group.
Troons are men and women who are wearing a disguise to sneak into a space where they don't belong. They
know they don't belong, which is why they react in such histrionic and sociopathic ways when they're questioned even slightly about their presence. That's the real problem I have with them (other than the whole mindraping former friends into sex-obsessed freaks): they're lying, to get into places they shouldn't be.