I don’t know exact answer, but one thing is teams are finding it easier to run the ball than pass. That in itself puts less strain on his name.
I think that he is still playing pretty good ball, but also acknowledge the scheme has a way of swallowing up players.
It’s sad how far this once gREAT Franchise has fallen and much needs to happen before it can be returned to the glory known as “The Steelers Way”.
If the Tomlin should leave it will still take several seasons (possibly more) to get things turned into the right direction. Following a coach such as Bill Cowher made it a lot easier for FO to replace him. Following the Tomlin, gives much less room for error for whomever they choose due to the complexity of crappiness left behind.