Instinctive dismissal of government regulation like it could never solve any problem is a bias. Pretty common in tech circles, but still.
I don't think there are many broad lessons to learn beyond aiming for peace and liberty, but "European governments didn't collapse" is hardly a powerful argument. The area is notorious for collapse, it is still in living memory when large chunks of Europe fell apart, sometimes quite comfortably so. It could easily happen again.
The fact that the government cannot create a regulation that works for everyone, everywhere, all at once across time and space is not a winning argument for me since that limitation applies to all actors. We go through cycles where we either change what society generally considers "ok" or we discover that something we thought was ok was actually a great evil after some forerunners on moral thought convince enough people of the righteousness of their belief.
That doesn't make regulating bad behavior not ok.
the UK has A.S.B.O.s, Germany has many laws and regulations against speech and being part of extremist groups. Both countries seem to be doing fine compared to the global competition
What is the reason it's not allowed?