I'm currently cautious about going "oh this is sane" in case I find some false logic in that post. I haven't yet. The guy sounds like he just wants to live as a woman (which sounds so stereotypical, and yet there's some truth to it), and he has dysphoria and knows that men will never be women and he seems to respect basic human biology. If I ever met him in real life he'd probably be that one trans I'd be happy to be friends with. He just wants to look feminine, be regarded as a female and knows he never will be. I found the same comment you found on reddit too. This guy knows he has a mental illness, but knows denying reality isn't going to solve anything, so he's transitioning while aware that he's still a man who just wants to have female features and be socially recognised as a "she". I'm somewhat happy to support that, but still a tad offended by his want to be a woman and be socially recognised as one, but if it's a case with dysphoria where you really want to distance yourself from your own body, it can help to transition.

I am curious though would he still want to be socially and legally recognised as a woman in Saudi Arabia or in other female oppressing countries? Would he feel fine being called a "he" after his transition? (I don't plan to ask him, I'm just expressing my thoughts on this type of person).

Edit: Added something