I once bumped into a woman on reddit who was attracted to effeminate men, trans-women (only because they're effeminate men), and NB / androgynous men. (...) Or maybe, they're intimidated by men and find relationships with women safer and more familiar, and this is the safest way for them to be attracted to men.

Mostly this. Scared of "chads", sexism, revenge porn, the "bros before hos" attitude, so into men who (she thinks) won't betray her (haha fat chance, men who perceive themselves to be failures as men are the worst perverts). This is everywhere on teenage twitter. I mean, South Korea's export is 20% semiconductors and 80% softbois.