He isn’t reading the safeties and nickel/mLB to understand which routes he can throw a receiver open .serious question, what do you consider "reading coverages"?
Eli and any young QB is not going to be put into a position of pre-snap reading more than to think man v zone and then go through progressions and throwing to the open #1 or #2 and maybe getting to #3 if given time before it becomes extend the play and run either upfield or enough with eyes up to find someone and throw accurately
"great" college QB's show that ability mentally and physically early and I am not sure about Eli with all the outside factors influencing him and needing to be considered but he looked to check several boxes at a high level
that said, he seemed to be different after injury and it's hard to overlook the interception early in the Louisville game as you can't not see that player or miss so badly but imo one of his consistent problems in on accuracy and touch with short passes, early on receivers helped him catching everything, later on receivers caught little and did not help him or Yarnell
He was the 13th ranked quarterback in the ACC out of 16.
Once a bit of tape was on this offense - it was shut down easily .
Maybe because he’s not practicing against zone coverage concepts