In a recent interview with "Esquire," Keith Richards told everyone what he really thinks of these dweebs called The Beatles:

Celebrity musician drama has a long history. Ye bards of olde probably talked sh*t about each other's lute tuning hundreds of years ago. Now, in modern times (but practically a hundred years past the apex of their rivalry), Keith Richards is still throwing shade at The Beatles:

[Interviewer]: I've been thinking about Rubber Soul, Revolver, Sgt. Pepper, and The White Album and listening to Beggars Banquet, Let It Bleed, Sticky Fingers, and Exile on Main St. Over the past 20 years, I've listened to that Stones stuff far more often.

[Keith Richards]: No, I understand—the Beatles sounded great when they were the Beatles. But there's not a lot of roots in that music. I think they got carried away. Why not? If you're the Beatles in the '60s, you just get carried away—you forget what it is you wanted to do. You're starting to do Sgt. Pepper. Some people think it's a genius album, but I think it's a mishmash of rubbish, kind of like Satanic Majesties—"Oh, if you can make a load of shit, so can we."
Sources: Esquire