I think the middle ground would be that there have always been some gender non-conforming people, whose natural sexual development got really messed up at some point, but historically they were so tiny as to not be of much concern to anyone. I’m thinking of eg Nadia on big brother.
but then the debate got so huge and polarised that it started affecting children, who do naturally play around with different gender roles as they grow up but eventually reconcile with their own bodies.
it seems to have been taken up by the left as a kind of lodestone issue in the fight against growing far right extremism in the wake of Trump et al. There’s a bigger existential question for the left, wherein some seem to think that by breaking down gender roles completely we can head towards a bright clear future free from sexism and homophobia, without realising that by doing this they are trying to erase the category of “woman” completely and therefore setting back women’s rights.