I'm not saying nutomic isn't a raging tankie and transphobe (they definitely are as per the post) but I don't see how saying biological male is the transphobic part?

There is much more obvious transphobia to point out here such as the claim that "the trans agenda" is being pushed by "the bourgeoisie". Last time I checked trans people experience intense discrimination which makes it very hard for them to be part of "the bourgeoisie", and a majority of media pushing against trans people is 110% owned by "the bourgeoisie"