Not cool bro. Why are you dunking on someone straight out the gates, with little to no context on the topic discussed? This isn’t twitter.
Radiohead where quite outspoken on the “Free - Tibet” but have used Hamas being labeled as Terrorist group and subscribed to the idea “Israel having the right to defend themselves”.
So making a joke about Radiohead not caring for the genocide in Palestaine because of “Hamas” is quite adecuate.
Depends on the band. Have they shared strong opinions before? Than yes, their fans can expect them to share their opinions on international politics. If not, nobody would expect them to have an opinion on the first place and there would be no discussion to be had.