Ah yes, Germany and Sweden. The last bastions for criminals all around the world. Oh wait, I'm 6-7 times as likely to be murdered in the US then those two places (Source).
I don't agree with this person, but I also feel like I'm missing something in particular if you're asking whether this person is stupid for having that take. Am I? Is there something about those county's prison systems that is important here?
In the USA there is no welfare system that prevents or cures mental disorders, weapons are freely sold and the streets are not safe.
It is clear that the only solution there is to wait for someone to go crazy and be thrown in jail.
Sure. Definitely nothing to do with the fact that in your country, locking people up is SUPER profitable for prisons and a few other industries so certain institutions lobby to make sure more people keep getting locked up.