Athos, I can't speak for others but hazard a guess that this:
is what gets people's backs up before they read this:
Plus your view of what contemporary feminist discourse should concentrate on may not be welcomed by contemporary feminists of any stripe. They are quite capable of discerning that for themselves. BTW, last I heard you don't have to be a woman to be a feminist.
Your choice of definition may be well intentioned but it
sounds patronising because you (honestly) include your reservations. To express any reservations here makes it sound as if you're tolerating rather than openly accepting. Reservations almost cancel out acceptance. But you make an excellent point about what's important here: the health and safety of trans women is paramount.
There will be others sharper than me who will have much less forgiving remarks.