Gender critical is a laughable term of criticism too. Is the opposite 'gender gullible'(?) and are the people critical of 'gender critical' people 'gender critical critical' and thus twice as bad.
It's almost as if some of the fundamental tenets of Butlerian gender theory cannot be explained by any of its proponents!
By the way, I can explain the body claim, with the outcome being that I'm about 20 years ahead of any progressives and they are all massively 'transphobic' because not only do they actually believe statements of that kind are untrue and therefore deluded (although they won't say so for social censure) but also because the implications of its being true are very wide-ranging and they do not recognise any of them (yet again, because they deny the literal truth of the claim).
What they also don't realise is that if they worked themselves into a mindset in which the claim can be literally true then pretty much all of the 'gender critical' critiques of authentic trans states are defused. They won't get to that mindset and, as a result, their project will be gradually dismantled on false premises (both sides are working off the wrong premise).