If you find his tone objectionable, try to look past it. Baez is a fellow worth listening to. He makes a number of substantive arguments why this looks and smells like crank science (for example, the contradictory statements about whether the experiment was done in a vacuum). It's perfectly legitimate of him to point out some social cues that you would not expect from a serious scientist making this kind of claim.

The faster-than-light neutrino experiment gave a result, too, but in these cases the onus is massively on the people making the wild claims, and rightly so.