Well, Snugglemonkey, your "... the fact that for many, it is not a biological fact" undercuts your whole set of beliefs (or 'ideology', for short). The "for many" gives the game away; facts are not 'for' anybody.
It cannot be a fact that what is a fact for some is not a fact for others. To see why, and glimpse the import, suppose the contrary: that it could be a fact that what is a fact for you may not be a fact for me. From this it would follow that it could be that it is not a fact for me, and so not a fact.
So if it is a fact (that what is a fact for some may be not a fact for others), then it isn't a fact. So it isn't a fact. In other words, it isn't (couldn't be) true.
(Of course some (even many) might think so-and-so is a fact when actually it isn't. That's different. We are used to people being mistaken, even about themselves: "I'm cool." (Erh ...) ... "Women find me attractive." (Well, ...) ... "I have a gendered soul" (Nope; sorry, no such thing ...))
This is pretty much the same with most genres of cognitive relativism. It cannot be true that there is no objective truth, for instance, because, well, again - think about it - if it's true then it's false; so it's false.
Interesting? - Some of us think so.
Moral? - Ideologies ('sets of beliefs') that depend on relativism of facticity or truth are self-negating. So they are universally false. Among these; most forms of transgender ideology.
Do you see Snugglemonkey? (I suspect that not, but there you go.)