I suppose it had to happen, just as feminism is a heresy of Marxist theory so one of feminism's heresy's comes back to bite. As you say the battle uses precisely the "weapons" honed by feminists in recent decades. In one way I warm to the "TERF" wars because it has really shaken the feminist establishment and exposes the contradictions in their supposed "theory". Most obviously the supposed minor role played by biology in the differences in "gender". Thus we have now widespread bigging up on the huge differences in sports performance and "unfairness" of mixing the sexes in sports of all sorts. Perhaps at some point this rediscovery of such difference might creep into the contradictory notion that somehow the biological differences are irrelevant to being a soldier, firefighter, combat pilot, etc.

A stark example of the nonsense is the case in this country is that of a "trans" man (woman to man) suspending "his" hormone treatment in order to conceive bear and birth a daughter , such a wonderful experience that "he" is to continue the suspension in order to have a second child!

As in the case you cite feminists are desperate to deflect attention from the fact that "trans" stems from Gender Studies feminism and simply expresses many of the same mantras so familiar from the very TERFs. Now bleating and seeking men to rescue them. Yet it was they who proclaimed there is no such thing as a "real man", its all socially constructed and "performative", faced with the obvious that that must mean there is no "real woman" that isn't socially constructed and "performative" the TERFs are revealed as believing there are "real women" , and shock horror "real men" after all.