My hot take:
Parents are lazy and failing their kids. (as is society in general ). Yes the social media and internet has led to an explosion in exposure and scrutiny. However their effect doesn't have to be so fatal. Kids need guidance in how to handle those influences and need the positive examples of what's important.
I think every generation, since the one that believed it was okay to beat your kids with a switch cut from an oak tree, has been gradually more permissive because they didn't want to be their parents. We're seeing the results of that now.
And each generation also has been trending towards the Helicopter Parents that we see, who want to be involved and control every aspect of their kids' life, down to joining Moms for Liberty and banning books that their kids either weren't reading anyway, or oblivious to the fact that the kids are seeing more real porn on their cell phones than they ever thought existed in a library book about two penguins holding flippers.
I graduated a public high school in 1974 that was brand-new, had a lot of young teachers and tried a lot of open-space classes with social sciences and English pretty much open to discussions about almost anything.
All my parents cared about was that I was on a decent track to a B average and wasn't getting in trouble. No real pressure as long as I maintained that. When a teacher told my mother, "Hondo could be getting all As but he doesn't apply himself," she just said, "you ought to see how he applies himself to chores."
My mother never once questioned a book that might be in the library, or a teacher. We had two openly gay teachers at our high school, 3-4 downright stoner hippies straight out the Haight, a history teacher who said in class that Nixon was a war criminal and one whose brother was a high-ranking official with the PLO (and was visited by the FBI on more than one occasion). You ought to see my high school yearbook. You can't tell the students from 80 percent of the faculty.
Not one single parent in the early 1970s said a forking word about it or tried to get those teachers fired or showed up at the School Board meetings like a pack of angry hyenas.
I realize this is a treadjack of sorts but I think it ties into the big picture: parents try to control too much of their kids' lives and then wonder why they rebel.