Yeah, I don't buy it. But even if there were to be irrefutable proof found that TiMs have "feminine brains" or something, I still don't see why that should mean we need to scrap our existing definition of "woman"(and its equivalent in every other language on earth, most of which do not even have a separate word for "female") that we've been using without incident since the dawn of time in favor of a redefinition to include certain biological males (who would not be instantly identifiable as "women" either!).

It's pretty obvious that the way other people treat someone is based on external factors, since there's no way we can peer inside someone else's mind or do a quick brain scan of them before our prejudices kick in, so even in this hypothetical future where TiMs have somehow been irrefutably proven to have 'ladybrains' there would be no reason for them to have a place in feminism other than strictly as allies or for "women's rights" to directly affect them. And even if they were proven to have 'ladybrains', lesbians and straight men would still never be attracted to them!

So I really don't know why any actual proof that could potentially be found (lol I doubt it will, I don't think it exists) for TiMs having "women's brains" or TiF's having "men's brains" would be relevant to anything at all, besides just making it possible to screen gender clinic patients to verify that they're "actually trans" before setting them on course to transition