Okay, so what punk musicians love Green Day, and who hates them?
I know that John Lydon hates them, but Glen Matlock likes them (and even attended one of their shows). Tom DeLonge and Mark Hoppus, Tim Armstrong, Deryck Whibley, Joey and Johnny Ramone, the guys from Less Than Jake (especially Vinnie), the guys from FOB and Ballyhoo! (a rising band from Aberdeen, MD - about an hour-hour and a half away from me), and others seem to like them. I also think that Jello Biafra doesn't hate them (he apparently had a civil conversation with Billie Joe during a Foxboro Hot Tubs concert), and said on one of his spoken-word albums that people should be more concerned about stuff like poverty than whether or not Green Day or The Offspring had sold out.
On a related note: what punk icons have met members of Green Day? I know that there's a pic of Billie Joe giving Joey Ramone an autograph, and Billie Joe apparently became friends with Johnny, plus there's the convo between Biafra and Armstrong.