I dunno about giving critics Carr and Tyler, or any other author, any weight just because they published a book. Usually a published critic is my criteria for NOT paying them any attention, lol!
Why? Because they can feign objectivity and be insincere just to be controversial and get attention. It's good for their job security. Sure, a critic can take a shot at the big guy, but what can THEY produce?---An opinion--big deal. A critic's opinion is no more important than mine. I'M the best critic for what I like, not somebody else.
If anyone wants to flame a Beatle for substandard efforts, it's allowed, I don't have a hangup about it. In some cases, even a Beatle might also agree. But even with their weaker songs in tow, they are head and shoulders above, they are in a class by themselves.
(...and an increasing applause gives way to shouts and a rising, deafening roar as Beatle fans the world over cry out in agreement...[^])