Bilicheck only allows his inner circle, Adams, Kraft and probably Brady. Getting caught taught Bilicheck that the OC and DC needs to be just be given the data to whomever they are game planning for.
I hear what you are saying Ike and with this line of thought that would keep actual proof to a minimum. Of course the players know something is up because they hear the other team's players talk, they probably even visit this site but mostly they know how often the right play is called and how much of an anomaly that is. Because DARTH keeps it to a minimum there is no proof in the court of law, so to speak. I'll admit he, DARTH hoodie, is the absolutely best at the "cheat" game there is.