I’ll say it, is a bit overrated. Jalen Hurts, Russell, Lamar, and Josh Allen have all been accused on not being great at “seeing the field.” I even heard Tom Brady once say he knew where he was going with the ball before the snap (which based off of coverages I’m sure he often did).
Mac Jones is said to be an “elite processor.” How is that working for him? Sure, “seeing it,” is important for some. Joe Montana (who managed to “see” Jerry Rice a lot!), Drew Brees, Payton Manning probably “saw it better than others,” but the game is equally talent and athleticism. Lots of exceptional quarterbacks weren’t great “progressions” guys. Looking at you, Terry Bradshaw!