For a 1 year deal, taking a chance on Wilson is a no brainer. With Pickett scheduled to make $2mm and Wilson only costing the Steelers the veteran minimum of $1.5mm that's only $3.5mm of next year's salary cap designated for the QB position so far.
And with the salary cap increasing by $30mm dollars for next year, the Steelers have an opportunity to use those additional monies to acquire key players in positions of need.
As far as Kenny goes, hopefully he takes the Najee Harris approach and improves his game the way Najee did when Jaylen emerged as a viable option at RB.