Yes pinup models and playboy magazines were a thing, though you know there were more people addicted to anything else than porn at the time, it simply wasn't as popular because you could totally look for a prostitute or better, find a girl to marry and put a few babies into, live a life you know?
If you could snap your fingers and magically get rid of rid internet porn tomorrow you wouldn't get rid of the ongoing and technologically-intensified issue caused by what's colloquially referred-to as the sexual revolution. Even some boomers wrote about this with their gay "free love" hippie communes where the love wasn't free or even equally or fairly distributed to the guys who put the most work into trying to make those things work.
Sexual liberalism is a lot like market liberalism where there's a few big winners and a lot of losers, and one of the greatest pieces of actual empirical social science was autists on the internet figuring out The Woman Question when they accurately diagnosed what was going on here and came up with terms like "alpha widow" to describe what they saw going on and was later corroborated by evidence from things like tinder. see: picrel
It's not as simple as "stop cooming to these blown out whores and problem solved" when you see a worse-than-pareto distribution like this.
https://i.poastcdn.org/aecf1cd511e0813d54fd6f48f5388099b3a3030cd867b1520e21585f1f351905.png