That part was weird given that women on dating subreddits complain about how guys only want them for sex.

A guy who wants a relationship may only have sex with a handful of women. While a guy who just wants sex can get into the hundreds. That's hundreds of experiences reinforcing that men only want sex compared to just a few saying the opposite. Samppling bias you could say.

Yeah I think you're absolutely right that is a factor

It's like the old adage in Hollywood that you had to sell your soul to the devil. Clearly the predators in Hollywood were the devils.