No, provide us with the proof that what you consider “good classic rock” is considered good by sources with some knowledge and authority, and not just a mob of non-discerning non-discriminating teenagers, and not just sales figures, which prove nothing, if not often enough the opposite of good.
I posted a partial list earlier: Stones, Led Zeppelin, Allman Bros, The Band, Grateful Dead, The Who, CCR, Cream, Doobie Bros, Eagles, Doors, Moody Blues, Tull, Lynyrd Skynrd, Journey, Foreigner, on and on and on.
I doubt there are many in the classic rock world who will disagree with these choices.