Don't want to sound like I am dumping on Mike Mac but it strikes me as notable that for a program that was supposed to be built around the idea of developing talent we sure saw a lot of talent that didn't develop.
Is Montez lack of development his fault or the coaches fault. We may never know but I'm willing to at least consider that four years of the same mistakes, the same bad fundamentals, the same frustrating inability to live up to his talent lever isn't going to be overcome suddenly by one year under Mel's staff.
We know that up until now he worked in an offense that didn't protect him. Most QBs if subject to the beating he has taken would get a bit gunshy.
Also remember that as much as we love Sefo's guts and desire he also had some very basic deficiencies in his game that never seemed to improve. He never got over throwing INTs in the flats, he never learned to go off the primary receiver and come back to a wide open TE .
I do believe that we focus much more on his deficiencies than others do. He isn't a great college QB but I think a lot of schools including some who tend to win a lot would gladly take him.
The offense in 2018, especially early on, protected him quite a bit by having him avoid having to make any real reads.