I've not forced my gender-critical beliefs on DD (13), keeping schtum when there's things on TV etc, but when she's asked me a couple of times in the recent past I've told her what I think (along with the standard caveat of "everyone deserves to be treated equally" etc.).
At her age, the standard mantra of TWAW is a regular feature in her daily life, but I think she peaked yesterday.
A boy in her year group socially transitioned at the beginning of this school year, returning after the summer holidays with a new name/pronouns etc. Yesterday DD returned home and asked me if she was still biologically male and whether biological males are better at running than females, as this trans-girl had quite emphatically beaten her to 2nd place in a sprint and she didn't think it was fair. I explained why males were faster due to their physiology and had a brief chat about how more and more people are standing up and talking about trans-women in female sport, even though they fear retaliation and cancellation.
DD went off to bed reasonably appeased, I am bloody annoyed though. It was only a PE race (she does run in inter-schools events too), but she has a neurodivergent diagnosis and has struggled somewhat academically, but the one thing she's always had is that she's good at sports.
NB: I've name changed for this as I know the mum quite well and am reasonably identifiable via previous threads.