Oh, they're cranks. Being wrong does not make one a crank; it's the constant repetition of the crank theory as if the crank has some special knowledge that makes the crank aggravating, not the truth or falsity of the crank's belief.

It's perfectly possible to be a "Tom Brady is the most amazing quarterback" crank. Hey, maybe you're right. But no one wants to hear about it and the vast majority of everyone is happy to live with a little bit of ambiguity, or they don't care.

Put concisely, "speaking out" without any knowledge is among the most annoying things a person can do.