(Note: This isn't necessarily aimed at another specific post that's on here atm, it just got me thinking.)
It feels like these type of memes have been cropping up more the last few years especially, and that they're an expression of nervousness from a culture anxious about how dramatically the popular perception of gender/sex is changing.
I knew that's not what you personally were going for, this has genuinely just been on my mind for a while.