I did not say it cannot be revoked or it does not happen anywhere else, I said it is scary for completely different reasons than waking up in a train to a border guard checking your passport. Moreover, both can in principle happen anywhere, but the extent and context of them actually happening also matters.

It's not nonsense, people are following all the rules and then having some thug with no ability or willingness to understand the situation revoke their visa. This can and will ruin lives I don't see how you're not seeing the problem here