everyone is allowed their own taste, preferences, and opinions.
you are not allowed your own facts. ATYCLB sold very well. Bomb won buckets of Grammys. the 9/11 Super Bowl performance was well received.
neither of these things indicate that you must like an album. but they do indeed indicate that, somewhere, a LOT of people liked the albums. to argue, then, that these albums are crappy may be subjectively true, but they are also objectively wrong. there is such a thing known as the Collective Wisdom (CW) which can be wrong, but, when one is trying to write or measure or observe a band's history and progression, one has to get over one's self and set aside one's personal preferences for just a moment and try to evaluate something on the basis of more measured, objective, tangible factors. otherwise, dialogue is impossible.
one is perfectly free to say that one doesn't like Sgt. Pepper's. that it starts out strong but then devolves as the album goes along into McCartney fluff. that Revolver and The White Album are better. but one is not free to say that it didn't change the history of popular music and represent an unqualified high point in the career of The Beatles and of popular music in general. it is a successful album with an incalculable influence that many people like, even if you don't yourself like it all that much.
we can nod to, acknowledge, and appreciate the opinions of others while at the same time hold different opinions of our own. it is possible.