I just tried to repro this.

On my Facebook account, I scrolled through 30 posts without seeing anything thirsty. Mostly synthesizer stuff, stuff for my kids' schools, and a few posts from friends. It definitely knows I'm male because the ads are for men's apparel.

Instagram was the same.

I never ever watch reels or other short form video, so maybe that has something to do with it.

It's happens in the reels. I don't really see thirsty posts in my feed either, just people I follow for the most part.