Is there any sources to suggest anything that it does, isnt relevant to RL, or actually reduces said stuff in RL? Because I haven't heard of any conclusive cases, and thus, I'm more on the case of seeing evidence, otherwise, I might as well agree with many who say this stuff is problematic because of apparently endorsing actual predators and are used as grooming tools compared to other stuff.

Some studies would be necessary, which may present difficulties. However, one can perhaps look at general rates of sexual assault and compare them to the prevalence and consumption of porn, and extrapolate from that.

I'm reminded of a famous quote from Cynic Diogenese: "I wish it were as easy to banish hunger by rubbing my belly."

It's essentially the "do violent videogames/movies/etc make us more violent" question.