That's only part of it. While he's flat and sharp all over the friggin place, his outfit is disgusting....
...and his on stage demeanor is horrible. One thing you do NOT do, as a professional, is mock your fellow musicians. Not only is it unprofessional, it's downright offputting...and people get turned off. You want to present a unified front to the audience. If you look at their video for Open Arms, the keyboard player does a solo prior to the song...and the singer is sitting on the drum riser making fun of the keyboardist on mic!!!! As if he's free from ridicule!
I would likely get very pissed off if I forked over money for this act....