It’s tough, cause a lot of history did take a long long time. The “dark ages” lasted like 500-1000 years and are significant for having little to no technological advancement. Before then empires would last hundreds or thousands of years without ever developing things like electricity or using the same exact agriculture practices. Then again, as I mentioned, history after the 18th century exploded and got super condensed.
Based on how the fallout games work. It makes a lot more sense for society to rebuild quickly. They have electronic written communication and working electricity/power plants basically right off the bat. If the writers wanted to make it make sense they would have to put more work into explaining that we were sent more into the dark ages after the bombs dropped. But that just isn’t true in the lore because there are well educated people that canonically survived right after the war and began rebuilding immediately.
I think the issue is the label “18+”. It’s clearly arbitrary. In many countries women’s breasts have little to no stigma attached to them and are freely shown in media allowed for children. Even more so for sexual innuendos and themes. On the other hand, things I’m sure you would consider “cartoon violence” are outright banned or just not considered children’s content in these same places. (In America we normalize showing guns to children, but in places with more gun control a gun on TV can be shocking).
So when you (and not just you, many people have this same sentiment) say
You’re appealing to a very very narrow definition of 18+ defined by your upbringing, time period, and region. To the poster before yous point, it’s pretty clear that kids are adaptable and are much less negatively affected by “adult themes” than we fear monger about evidenced by my earlier point that kids around the world are raised with wildly different standards as to what’s “18+” and they are all able to grow up into functioning members of society.
Now from what I gather about Hazbin Hotel it’s a pretty adult show, I’ve never seen a frame of it, but after looking it up it’s rated 16+? And people online are saying it could be fine for 13+ with adult supervision?? So how nasty can a panel get? (Edit: sorry I thought it was an “adult” adult show. This is just a YA show, seems like a lot of todo about nothing. Maybe the children were loud and it got annoying). I really don’t know. Maybe the show is extra gross but I’m not defending this particular instance, just the topic of this one thread.