The thing I tell people is that as a parent, you are going to put maybe a few hours into blocking them from getting to stuff. They are then going to spend as much time as they want trying to get through it. You can dig through concrete with a spoon if you’re patient enough.
Educate them, and give them access when they’re responsible enough
The old in Japan have that problem. There have been other studies that have shown that you get people have significantly less problems with it. Japan has always been insular, but their politics and older age groups have always been more stagnant and less accepting.
Basically, don’t throw the whole country under the bus when it’s just the old farts that don’t want things to change.