Systemic? Come on man. What violations do the Pats have outside of Spygate? Spygate, by the way, was a one game violation for taping signals from an unapproved location. It was not some elaborate signal stealing scheme that ESPNSucks made it out to be. For one, there was no rule in place regarding the location of filming signals until 2007. Even when that rule was put in place, teams could still film signals, but only from certain locations in the stadium.
The Pats other violation is Deflategate, which is a fictional tale created to make Goodell look all powerful again. That hardly meets the definition of systemic. Systemic cheating would better describe the Broncos salary cap practices in the 90s and early 2000s. However, they aren't the Patriots, so no one cares.