2. Steelers fans aren't willing to accept mediocrity
Much like the Green Bay Packers or New England Patriots of the past 20-30 years, the Steelers and their fan base aren't used to mediocrity, nor are they willing to accept it. Ben Roethlisberger spoiled Steelers fans for years, but also set a standard going forward.
Are the Steelers expected to go find someone just as good as Roethlisberger immediately after his departure? Of course not. It would be unfair to have those expectations placed on the next man up (i.e. Pickett).
But, at the same time, Pittsburgh is not going to accept such mediocrity for much longer. This is a franchise accustomed to winning, and a lot of that winning over the years has come on the shoulders of the quarterback position. Go back even further and you'll see upper echelon quarterback play from more than just Roethlisberger. Terry Bradshaw says hello.
The Steelers cannot give Pickett the same amount of time that these same Bears gave a guy like Mitchell Trubisky.
The irony in that last statement knows no bounds.
When you know, you know. And what do we know? Pickett ain't it. It's time to call a spade a spade.