Interesting discussion, guys. I agree with a lot of what has been said.
I like the Pumpkins a lot more than I like Radiohead but there's no question Radiohead has contributed more to music than Corgan has, at least in my mind. They were both huge bands but objectively speaking we can at least say Radiohead's later recordings have been far more successful than Corgan's later recordings -- which leads me to my next conclusion. What this reminds me of more than anything is when Jack Bruce was seriously pissed off about the Led Zeppelin reunion causing a 10 times bigger wave than the Cream reunion did.
The very fact that Corgan would aim his crosshairs at Radiohead tells me that the dude is pretty pretentious, because Radiohead and The Pumpkins are pretty closely related style-wise, which makes it seem like he's taking a cheap shot at a formidable rival. If he had instead picked on, say, Cryptopsy, what he's saying would seem a lot more reasonable. Even if he just went a TAD farther out and said an indie band ala Arcade Fire, it wouldn't seem like such a cheap shot. But Radiohead & The Pumpkins were both making their spacey, synthy alterna-rock albums side by side in the 90s so I just can't shake the feeling that jealousy is the sole arbiter of his complaint.
But as for his actual comment, seems like it boils down to him wanting old guitar slingers from his youth to get respect. Can't begrudge him that but he's looking in the wrong place, all he has to do is divert his eyes a couple spaces and look at the metal community. Ritchie Blackmore isn't considered one of the guitar gods in alt-rock? Wow, no fricking way! I also bet Neil Young isn't considered one of the guitar gods in neo-classical metal, nor would I expect to hear Alvin Lee brought up amid a discussion of the virtues of country & western guitar playing.
All in all he's just another clueless fool overdosing on ego. Gosh if these people would just bounce their opinions off of a friend first they could avoid sounding like such ultimate jesters. Billy's saying he'll diss his contemporaries but he won't diss the classic acts from when he was a kid. SO SHOCKING. That only means he's exactly the same as damn near every musician who has ever lived. He's such a "radical." He's as new and exciting as a black & white TV with bunny ear antennae.