it made a compelling argument that one major millennial turn-on is hentai
Hooray! Soon it'll be considered normal!
But seriously, I feel like the greater prevalence of a wider variety of porn is likely responsible for people being more sexually open - their feelings and desires less repressed, which is a good thing in my opinion.
I can't really think of any realistic negative effects though. I'd imagine that complete desensitisation is rather difficult to achieve, so is therefore not a great risk.