It's pick your poison but this is what it boils down to for me.
Hurney gave us: Peppers, TD, Olsen, Cam Newton, Luke, Gross, Double Trouble, DJ Moore, Brian Burns, Beason, Kalil, Charles Johnson as iconic Panthers
Gettleman gave us: Christian McCaffrey and MAYBE Shaq Thompson as iconic Panthers.
Gettleman's late round drafting wasn't even really better either. Hurney would swing and miss a lot but when he hit, we'd get guys like Josh Norman, Greg Hardy. Their midround drafting is pretty comparable with lots of mild hits and big misses for both.
I get the concerns about the oline, but we do have Brady Christensen and Deontay Brown from this years draft class, one or both could be part of the answer for improving the oline next year (or earlier).