It's unfortunate. The Patriots didn't need to do this. And doubtful this altered the outcome. Brady threw an interception and the game was still competitive at the halfway mark, when the balls were under-inflated. It was during the 2nd half, when presumably the balls were re-inflated, that the Patriots pulled away.
Fair. However, who knows what could have happened had Brady & the Patriots played with normally-inflated balls? My guess is that he would have had a much harder time throwing the ball...same thing with the wide receiver who threw that TD....the wide receivers & tight ends may have had a tougher time catching a harder, more-inflated ball & chances that they & the running backs could have increased their chances at fumbling the ball deserve serious consideration.
I'm not saying that the Colts would have won the game, but the score could have been much closer than what it was.
Bill Belichick was a disaster until by chance he discovered Tom Brady. He was terrible in his previous coaching jobs, and the day Tom Brady replaced Drew Bledsoe changed his destiny forever. It's unfortunate that he had to routinely cheat in order to relieve his paranoia & anxiety. Hopefully, he will pay a hefty price for his cheating ways.