I feel you, but in defense of the OP, they said "likely", after considering the fact that the band was included in the festival and they do not torment themselves with politics.
We all do this kind of judgment. I don't go to the USA because I'm probably gonna be discriminated as a Mexican. This is not the same as to say all Americans are bigots, but assuming you're American, you sure have some relative or acquaintance that would absolutely not love me there.