Yeah, a lot of that stuff reads like a) I am trying to be so open to all kinks I don't actively hate that I scare people off and b) I am fetishizing old-style two-white-dudes slash fic where you can tell who tops by the hair color and c) I am extremely socially awkward and bad at current fandom discourse.

But the "modern western genders" stuff is pretty clearly "I'm an actual real-life transphobe," otherwise they wouldn't think "modern western genders" means trans stuff. (I am super tempted to write them an Imperial Radch AU that meets all their qualifications. Definitely no modern Western genders there! Don't know how else to avoid it.)