They suck is perfectly valid reasoning as to why I don't agree to them being in the rab Hall of Fame.
I know that things such as: Have they switched time signatures in this song? and Is their guitar player classicly trained? are reasons for you, but, if I don't enjoy the music, then they suck. I don't care how many notes he can play per second, or how often they dress up like flowers. If they suck, they suck.