Yeah...or you could listen to the stuff that's generally regarded as McCartney's
best work, but where's the fun in that?
Next you can base your opinion of Shakespeare on
Titus Andronicus or your opinion of Marlon Brando on the film
Candy? Why stop with the arts, though? Surely it follows that Isaac Newton must have been a worthless imbecile because of his dabbling in alchemy, right?
Look, to use an example of another beloved 60s musical icon; about 98% of all of Bob Dylan's music does
absolutely nothing for me, so in that sense I'd guess I'd say he's "overrated" but I've never felt motivated to harangue Dylan's fans about his status in the musical pantheon. That just seems like a sort of jerky and pointless thing to do. If you want to critique McCartney, go to it. I'll probably agree with you on certain points, but don't base your critique on his
weakest work. That's just cherry-picking with a dollop of straw man thrown in.