Quite, when in the Beatles he'd got Lennon and George Martin to do that job, but, and I'm only surmising here, he surrounds himself with yes men who are on the payroll, well they're not going to turn round and say "That's rubbish Paul" are they?
I remember an interview with him after the 'Give my regards to Broad St' calamity, where he said "I can see it's not very good now, but why didn't somebody tell me at the time?"