I'm not going to bash Richt on play calling, but I will get on him for the QB situation. The guy knows what a top level college QB should look like. He's had Stafford and Murray. Not to mention, he signed Eason, although the jury still may be on him.
Regardless, if he saw the goods that Malik was delivering and eventually bought it, that's on him. It's on him for not holding Rosier to a higher standard. It's on him for not seeking out another player to reach a higher standard. It's on him to not hold his son accountable to that standard.
It's no secret. College teams go as your QB goes. Look at the wonders Watson did for Dabo and Clemson. Or how a QB from Mililani, HI lead UCF to a Peach Bowl win.
Rosier flat out sucks. There's no two ways about it. He looks like Kaepernick when he started to fall flat after the Niners' most recent Superbowl run. So many misreads, no progression, overthrows to a 6'4" Tarantula with a 30+ vert, anything less than a perfect pocket and he tucks and runs.. It's almost as if his only trait is to throw a football. That's it. The strengths on his NFL scouting report read "Throws a football." Sick of this dude.