Maybe, maybe not.
Where is the proof that Brady caused anything at all to happen or is responsible for any of this?
The equipment guy doesn't benefit from under-inflating the ball. He doesn't care if the ball is under-, over- or goldilocks-inflated.
ONLY Brady benefits from this. Nobody else. And some subterfuge was used to get the balls past the normal inflation check. The claim that the one person on the field who benefits from this -- who clearly lied -- has not been "proven" to have done anything is an argument worthy of the Casey Anthony Jury.
But not serious people.
He cheated; only a moron would be unable to connect the dots.