Based on the limited number of songs I've heard from them, I find them to be overrated because to me their music lacks cohesion.

If I compare them to an artist like Paul Simon for example, it's clear that the music originates from a single source. Paul Simon would write about the world through the lens of a young man making his way through life. This goes back to even his earliest days as a duo with Art.

Perhaps due to multiple songwriters or the approach that the Beatles had towards writing songs, I feel like their identity is disjointed. Not to say that they haven't written good songs, but over the span of their career I think there major shifts in musical direction that prevent a singular foundation from being formed.