All this conjecture is interesting, but from the one center field camera that I saw, even though he pulled it back fast, and didn't swing hard, the bat clearly got to at least the forward part of the plate.
It's the kind of call that is maybe a 50-50 call for the ump, and maybe if he doesn't call it, it goes to the 1st base ump, but in this case, the ump made the call, and that was that.
Shadows being what they are, you can see that the shadow at least is past the plate. The swing was close enough that maybe 50 percent of the time the ump makes that call and the other 50 the first base ump makes it. Either way, all of you whining about it not being close at all need to lighten up. Let him have his day in history.