Does a greater amount of more varied type somehow make it more damaging?
I should point out that very explicit pornographic content that is now taboo in our society including bestiality, incest, and so on has existed for thousands of years. I'd much rather my kids be looking at pornhub than some of the things the Greeks and Romans were making...
What “exists” is not very relevant, the difference is that when i was a kid you’d have to steal a magazine from a shop and it would have a bunch of photos of naked women, sometimes having sex. Now endless amounts of porn is available at the click of a button, of course that’s much worse.