I don't think Brady was as heavily involved in the cheating. I weigh Spygate much more heavily than deflate gate, and that seemed much more like something driven by a front office than players. The players may have known, may have even been shown the tapes, but I highly doubt Brady was actually in the stands with a camera at any point, and I also doubt he had the authority to command people to do it on his behalf (maybe later in his career, but not then).

Deflategate was cheating, but it seems such a smaller and more minor violation that just got blown up because it happened to be Brady and Belichik. If any other QB did that they might get a 1-gane suspension, max.

If Brady was someone a mythical cheating mastermind, it would have been way harder to translate that to a new team. Different coaches, trainers, equipment personnel, security guards, janitors, etc.

Belichik needed both Brady and cheating to win. Or at least someone better than Mac Jones. Bill Belichik as the GM was pretty terrible.