Look at this article - not so much for the article itself, scroll down for the CDC and NIH data it links to.
"While generalizing about tens of millions of people is always difficult, a series of studies in recent years have reported that teens since the tail end of the millennial generation trend towards being less sexually active; they launch their sex lives later and have fewer sex partners than earlier generations."
Interesting, I missed that. Anyways, while I think this is an important piece of info, we're still talking about porn rather than sex. There's a difference between exploring with an also-awkward person your age and watching someone else do things they don't actually enjoy while making noises they don't really make, in positions that are more obnoxious than fun, making it look more desirable than it really is. I get this because that's how I discovered sex - just like every other human for the last however-many-million-years.
This is the first time you're getting dozens, maybe hundreds of hours of watching someone do it arguably "wrong".
IMO it's a stronger desire to "do no wrong" than to "do right". The adult entertainment industry is rife with trafficking, drugs, assault, etc. - it wouldn't surprise me one bit to hear the youngest generations are swearing off it simply because they won't associate with that level of dangerous stuff? I'm just pulling things out of my behind here though. I could be totally off the mark.
"While generalizing about tens of millions of people is always difficult, a series of studies in recent years have reported that teens since the tail end of the millennial generation trend towards being less sexually active; they launch their sex lives later and have fewer sex partners than earlier generations."