Even if Dave wasn't in Foo Fighters, they would still suck, it's just that it wouldn't be worth starting a thread on why they suck though. Which leads me to believe it's not as irrelevant, as you would of hoped. Nice try though.
It just depends, if you like discussing music, or not. Sure people have different tastes, but it's not worth getting all bent out of shape like a Foo Fighters song.