You can't both deconstruct and participate in a hierarchy at the same time.
I get what you're saying. And you're not entirely wrong, especially about the sadness of it all.
I went through the comments on this, btw, and I find it interesting that the staunchest adherents to gender and M2F Transwomen. Kinda supports what I was saying about hubris, don't you think?
I'd have a hard time chalking it up to coincidence that those most socialized to find value in that hierarchy in the first place still align with those most resistent to give it up.