4chan is old enough to drink. Something Awful is from the 20th century. Don't pretend that transgressive internet content is some novel challenge that today's youth must face for the first time.
You are mistaken if you think it is about transgression. Old forums had no algo feeds to manipulate the content you saw and steer you. This is the issue, not so much the content itself.
No our algorithmic manipulation was done through corporate media. Same monsters, different medium. It was the church, then newspapers, cable news, and now social media. https://en.wikipedia.org/wiki/Manufacturing_Consent