As someone put it, that's from a time when the Internet was a place you went to (usually a corner) and, more important, a place that you could leave whenever you wanted. The dynamic is different.
As someone who didn't like school thwt much the thought of having to deal with some of those people 24/7 fills me with dread.
It would have been terrible if my parents would have banned that. But they were very progressive luckily.