But they also influenced a ton of bands (including, for both of them, the Beatles), they changed the way rock was perceived and listened to, they spoke to and about an entire generation, they helped create/refine entire genres. they displayed a proficiency at their craft and/or instruments...
You could say a few of those things about Radiohead too honestly. Influence + proficiency at their craft and instruments (they might not shred but they are/were instrumentally innovative) definitely.
I mean if they were so bad surely they wouldn’t have 3 albums in the top 10 highest rated albums of all time on the biggest music rating site: https://rateyourmusic.com/customchart
You COULD say them, but I'm not sure it would be justified by the facts.
Look, we - I - started this with a diatribe (yes I admit, that's what it was) about Phil Collins. The dude has sold 100 million albums ALL BY HIMSELF. In America only, No Jacket has sold 12 MILLION alone. Face Value, 5 million, Hello, 3 million, and But Seriously, 4 million. In the UK, NJR and ...BS alone are about 4.5 million.
The highest selling Radiohead record - OK Computer - is 2 million. Rough math (very rough) has ALL their records combined at about 7 million total. (In the UK, about 4.5 million total).
There is no "Radiohead [insert instrument] sound". You ask metal, rap, country fans what the "Phil Collins drum sound" is, and they know. MY MOTHER knows "In The Air Tonight". I think the "TAC data point" is relevant, because to a degree, the ability of an artist to transcend genres is important. The Beatles are the Beatles, because EVERYONE knows at least one Beatles song, and for good reason.
And as for that list, I put zero stock in it (we've talked about it here before). I love Floyd, to the point that I'm almost a discography completist (yes, even the big 'ole Early Years box set) but to have a top ten list that has three Radiohead and two Floyd albums, and ZERO Beatles, Zeppelin, Dylan, Hendrix, Stones, Who or Queen albums is on it's face suspect.
Look, it's all friendly discussion. If they are your favorite band, I'm sorry, it's not personal. They might actually belong in the Hall for all I know (and for all my judgement is worth). But I just feel there are outside forces at work when they are second ballot while legendary artists, genre-creating artists (and artists that influenced Radiohead themselves) sit outside. It's a crying - literally - shame that Chris Squire and Jon Lord didn't get to experience their honor, because of billshot personal crap from the nominating committee, and Radiohead gets the benefit of the doubt, in my opinion as much for their politics and attitude as their music.