Over at Zone Coverage, I wrote about Sam Darnold. In short, I think he's fine and I've been surprised at the fan reaction.
Check out the piece here
Luckily, we don’t need words. The EPA and CPOE chart from RBSDM tells us all we need to know. EPA, or Expected Points Added, quantifies the average point value added by a quarterback based on measures like field position and down-and-distance. CPOE is Completion Percentage Over Expected, which essentially gives us completion rate but adjusts for the distance of the throw.
Measures like these put quarterbacks on a similar playing field and eliminate empty yards or screen-dependent plays. They also ask if a quarterback can move the ball or complete passes more precisely.
And Darnold was not particularly good at moving the ball or completing passes.