Because when it comes to *ranking* someone/something, then yes, critical and public opinion *does* matter.
When it comes to me deciding whether or not I'll read something for the first time, however, I'm interested in that as well as a variety of other factors, such as when it was written, by whom, the style, its influence and significance, who/what it was influenced by, if I think it'll benefit me in my studies or if I'll just enjoy it, what gaps in my reading I still have to fill, and so on and so forth.
And you seem to revel in contradicting pubic opinion as much as I allegedly argue for it in the cases of those like Shakespeare, Mozart and the Beatles...
All of which is beside the original point of why you (apparently) don't think the Beatles did anything original at all ever, despite the fact that, yes, you're basically alone in that opinion here...which I'd argue would matter because, hey, if on the one side 99 people say X, and 1 person says Y...
Y better make a pretty damn AMAZING argument...otherwise...99 vs. 1...