“If you want to know who rules over you, just look for who you are not allowed to criticize.”
I’m sure if he had said bad things about Catholics, Lutherans, or white people in general he would have been allowed to perform, and any criticism would have been met with a shower of “it’s free speech” and “freedom of expression”.
Yes, what he’s saying is free speech, but it doesn’t mean we have to applaud it, or give him a venue to spout it. Germany does have some illiberal laws.