Based on what?
Did the Steelers continually harbor a player that injured the same player in the exact same way 2 years in a row and then KO a WR in the playoffs on that same team? No that was the Bengals.
Did the Steelers run Bountygate or go hire the guy responsible for that after the fact? No that was NO, Rams, Titans, Browns, and Jets
Did the Steelers have a guy that stomped on other players arms with cleats on? No that was Lions, Dolphins, and Rams
So please give me the evidence you have that surpasses these things