About what "Protect the youth" has become. Idk what it was like in other countries and I know that it very likely could have been stricter than it was in my country back then. But generally:

He was like "When I was 16, there were two kinds of adult content: Horror movies and explicitly depicted sexual content. The first made me have nightmares, the latter (as in what you could get in video rental stores) generally wasn't of much interest to me because it wasn't something I, as a 16 year old, could relate to. And other sexual content that was interesting (and/or helpful) WAS freely accessible. So whenever I saw an "18+" label somewhere, I just completely ignored that content because I knew it wouldn't be interesting at all to me.

But NOW, what's declared 18+ is even an excessive amount of swear words in streams! NOW, when I see an "18+" label, I don't know if it's horror movies that'll give some 16 year olds nightmares, if it's completely unrelatable porn, OR if it's educational sex ed, a 20 year old talking about their really healthy relationship with their partner (that includes intimacy), education about consent in BDSM (which affects 16 year olds as well, there's no age limit to curiosity), a live stream of wholesome musicians who happen to drink a couple of beers during kind of therapeutic talks, or simply people who aren't puritans and say "fuck" a lot! An 18+ label isn't worth anything anymore!"

And yeah... That's just it.

People who talk about body changes during their (first!) puberty are even labelled adult content. Even though puberty very much happens BEFORE adulthood. It's helpful content for minors. And it's labelled "adult" to "protect the youth".