If you leave Facebook for long enough and are a man, it'll start sending you notifications anytime a woman you follow posts something. (I don't know what it sends women.)
That said, Instagram is actually not run like Facebook in my experience, which is most of the reason Threads is part of IG.
I think that happens because females tend to use social media more, or out of your social graph females are the ones who do. Im a straight partnered male and i dont get coombait because i dont find the content interesting and very quickly i get cute pets and science stuff and half of the suggested people are other male friends
I'm not sure how many different "algorithms" Instagram has. For me I've got the reels to only show me animal videos so it's a pretty good experience, but I'm afraid to give them any signals that'll knock it to anything else. Account recommendations and ads do try to hornybait me, mostly because my partner is a dancer so it reads that content as sexy.
If you leave Facebook for long enough and are a man, it'll start sending you notifications anytime a woman you follow posts something. (I don't know what it sends women.)
That said, Instagram is actually not run like Facebook in my experience, which is most of the reason Threads is part of IG.