Oh sure, I'm aware ftm trans people 100% exist, but if I may ask you, doesn't that whole 'detransitioning' and/or 'misgendering' kink irk you? Not only because of the subject matter, but because it perpetuates harmful stereotypes about trans people in general, but PRIMARILY transmen. And the idea of a cis woman larping as a transman just for a fetish, I'm sure that upsets you, and I do not blame you at all for feeling like that. And while I understand that those interests likely resort from trauma, I definitely think there's better ways to cope, not to mention encouraging others to think in the LGBTQT+ space on how their actions and/or interests affect the general public's perception of us, I mean you as a transman I assume you're tired of presumed transphobia IRL, so hence, I think you'll agree with me that it's 100% justified to question trans/"trans" people in the space with that interest or if they're cis who fetishized the trans experience.
I'm pointing it out because to me, like a good 1/4th or 1/5th of ftm stuff online in my experience has that stuff, and when it comes in sexual communities I've noticed that quite a bit. Milage may vary, but a good barometer is taking agender at the subreddit dedicated to that.
And of course, ftm people like you I'm not talking about, but seems in my experience ftm usually entails all/most of the above I've mentioned. And your tastes are, sadly, in my experience tend to be on the few and far between side or at least 50/50. But than again, cis people who're pretending to be trans for a kink, well, also wouldn't be fair to lump them in with you. I'm sure YOU wouldn't want ftm to be associated with those kinds of people.