Of course they have but Dylan is addressing the latest and past practices of the Croats who were no friends with the Serbs or Jews for that matter....
I find it interesting that Dylan is the only current high profile musician who has the guts to speak out againts the Croats considering their alliance with the Nazis....
Croat crimes in WWII were some of the worst crimes imaginable, even the Nazis had to tell them to tone it down a bit.
Maybe he is only unusual in that he happens to be a famous American talking about it.
I’m gathering from the whole kerfluffle that Croats have heard this quite a bit - which may not be a problem if you actually were a Nazi-sympathasizing Croat, or related to them.
There were many who were not - just like there are many Serbs who aren’t commies.