That guy said "The Beatles are overrated pop bullshit," despite having never listened to an album. That warrants a big "fuck you."
Oh my god...and quite frankly you don't know the score on the fact/opinion issue - that other guy was on a blatant troll, but he was right.
That guy implied that saying something is "the best" is an objective statement! Jesus Christ... do we really have to go into this again? You have got to be kidding me.