For the record, nobody says or believes this. We believe one should be free to change their gender, eg a woman should be free to live as a (trans) man. That's an entirely different thing than saying the man/woman dichotomy doesn't exist.
That was, of course, a little bit of an exaggeration just to paint a picture. And it was not that important to the overall argument, that's why I formulated it so lazily (I wanted to sum things up in few words).
However if we'd go in there, I think there are many people on this side of the argument that really believe/push the extreme version of this. Atleast that's my impression. But since we had for example biological males competing with biological females in strenght-based sports, I'd say this impression is not that inaccurate.
That is, atleast for me personally, an insane thing. Even though I personally fully believe that trans person should be able to live freely their live, I think there are some limitations simply because of that dichotomy and sports are one of those few examples of things trans person should not automatically be able to do and it should be strictly on the case-by-case basis.
But maybe I'm wrong - I'm of course very open discussing other points of view. These sensitive topics are rarely discussed in a civil manner online, so I'd be honestly glad to do so, because I really want to try & understand what drives people on this side of the argument.
For the record, nobody says or believes this. We believe one should be free to change their gender, eg a woman should be free to live as a (trans) man. That's an entirely different thing than saying the man/woman dichotomy doesn't exist.