Ron Cook: Keith Butler isn’t the problem for the Steelers defense https://www.behindthesteelcurtain.c...lem-with-the-steelers-defense-mike-tomlin-nfl "The problem for the Steelers defense this season wasn’t Butler or bad coaching. It was too many mediocre players." "I just wish Tomlin would allow Butler to run the defense without so much interference. Being involved in the game plan is one thing. That’s a must for any head coach. Correcting calls that he doesn’t like during a game is another thing. But taking over the play-calling, which I believe Tomlin frequently does, is too much. It’s hard to blame Butler exclusively when things don’t go well." "It’s certainly not his fault that Ryan Shazier was injured in Cincinnati in December, 2017. I also don’t think it’s his fault that Artie Burns, Bud Dupree and Jon Bostic – among others – weren’t good enough this season." So it is Tomlin's defensive interference and Colbert's mediocre drafting and mediocre acquisition of free agents.