Problem is, that they don't discuss the cases with anyone (because of children protection). They may all be valid abuse cases, but they will just not present any data about them.

In most famous case in Czech, I believe it was real abuse. Despite that common Czech perception is that is was basically misunderstanding. In other cases I'm not so sure, but I miss lots of data.

It's also not about basic travel, but living there.

But it all comes to the rules. You live there, you must adapt. Czech are crazy when immigrants don't adapt/integrate, but they don't want to do the same abroad.