A child could not just stroll into a bookshop and ask for 2girls1cup.
They could. They could walk into a bookshop and buy what we would consider to be child porn. Social attitudes towards children were very different back then, there wasn't the same idea that they needed to be protected from adult topics. Laws restricting children's access wouldn't come along until a lot later, though that's partially because they tried to just ban porn outright at first. Didn't work at all.
I grew up in the age where one of our buddies would snag his dad's Playboy magazine and bring it to the tree fort in the woods
Oh yeah, it's way more available to kids than at any point in the past 100 years or so, just not in the past 1000 or so.
A lot of the problem with discussions of availability is that everything is more available these days. Porn is more available but then so is literature or scientific knowledge. If you instead look at how much effort is spent to keep these things away from kids, we're at a high point in history.
I tried to be pretty neutral and just talk facts about the history of it so far. My actual opinion is that more should be done, specifically on the subject of children's access. It's not the end of the world and it's certainly not anything new that's going to destroy society but our morals have moved on and improved from the past. Kids get this period of protected innocence and are allowed to leave it at their own pace. The only problem is what should be done about it. If a teenager goes and searches up some filthy shit I couldn't care. They went and searched for it and they're at the age where they're meant to be exploring stuff. It's the kid who accidentally stumbles across it that I'd worry about.
Also the "Oh god won't somebody think of the children. Ban it all" argument is as retarded here as it is when people apply it to guns or anything else. Children need to be supervised, protected and kept away from unsuitable things. The world doesn't need to be wrapped in bubblewrap so they can go anywhere and do anything.
I also think the free speech arguments are somewhat retarded. It's not that they're wrong exactly it's just totally orthogonal to the reasons that free speech is so important.
So yeah, more to demarcate porn and make it easier for parents to prevent their children's access would be nice if

technically. Banning it is going to end about as well as it has for every society that's ever tried to ban it.