How about here?
Nobody is watching "barely legal" porn thinking they're intending to portray children. They're watching "barely legal" porn thinking they're intending to portray 18+ year olds. That's why they are literally marked 18+. Here is a screenshot, no link, from a site that isn't PornHub but which does have a robust system of tagging, to show what they do now:
View attachment 64938
They do this now
because of the 2020 rulings that you love to think didn't change anything. Every time the word "teen" is mentioned it is appended with "18+". PornHub does it too. They all do this now to make sure that
nobody can possibly think that they're intending to portray people who are underage.