I sure this was a very important factor. I was already a confirmed jazz listener when the Beatles albums were coming out and naturally sceptical about the attention they were receiving while my ears were trained on other (and generally ignored) new sounds from Coltrane, Herbie, Hubbard, Kirk, Shepp, etc. The Beatles' lurching from style to style had me saying this can't be all their own work, so Hot Ptah's comment on their producer seems very much to the point. However, now we know the truth about Teo Macero's part in Miles's "electric" work, I should as a jazz listener be less critical about how the Beatles' music came about, I suppose!