100 years is nothing on an evolutional timescale. And up until one generation ago, it was not possible for children and adolescents with still very high neuroplasticity to get this easily lost in a flood of full HD 60fps ever-escalating hardcore pornography.
That is different from renaissance paintings with titties on it, or even some lewd tapestry drawings
Up until relatively recently in history, children and adolescents were forced to do everything from fight in wars to hard, dangerous labor to marry adult men. I'd say shit is overall better for kids now than it was previously in history even if it isn't perfect.
Go talk to some experts that have been around for a few decades. GP offices are flooded by dudes with erectile dysfunction, social workers see a sharp rise in literal children raping each other (something that just didn’t happen 20 years ago), and about the psychological welfare of the western world nothing needs to be said.
Kids engaging in age-inappropriate sexual behavior is one of the big warning signs of CSA and has been for decades. If kids are raping each other, more than likely those kids are being sexually abused by an adult or older child in their lives. It's also sadly not a new thing either.
If the psychological welfare of the western world or whatever is so bad, you're always free to move elsewhere. There are even countries where porn is still illegal. Interestingly enough, those countries tend to be oppressive shitholes where women and children are treated even worse than in the west.
Kids shouldn't be looking and hardcore porn, and can't unless their parents are paying zero attention to what their kids are doing online and not even bothering to install a filter. That's also a key part of the issue the tradcel types don't acknowledge, kids aren't going to be looking at any porn if the parents are actually doing their jobs and not giving the kid unsupervised, unfiltered internet access.
This is also an 18+ website kids aren't supposed to be on. If a kid stumbled onto this site, would you say it's the fault of the site, or the kids parents for not paying attention to what their kid is doing online?
Again, it all just seems like people are blaming porn as an excuse so they don't have to own up to their own bad choices and problems.
To swing this back over to nofap, I wouldn't be surprised if some nofap types are former denizens of gooncaves. It seems like the kind of thing where people would just pivot to the other extreme.