Spreading the field and running quick slants out of a 3 step drop is a pretty common goal line play. The issue though is it brings more risk than a fade or bootleg play where the QB can just put it in the stands if nothing is open. But I’d guess it has a high success rate.
The main issue is why not kill the clock (or burns pats TO’s) with a run on 2nd down. Still 30 seconds or so for Brady to at least put together a FG drive.
But as far as that play, that DB made a hero jump on that route, you can see him react preemptively, reading Wilson the whole time. Just an incredible play on the biggest stage.