No, I guess we can't all agree on that. Regressed? The production wasn't as good so in that way, yes. But not nearly as much as people wanted to claim.
I posted this last week. The numbers were worse his sophomore year. But many were talking about how bad he was last year when he was actually significantly BETTER than his Freshman year. But most people don't want to believe that.
And I don't know how you're going to quantify "ways that can't all be blamed on the talent around him." Was it all that? Probably not. But it seems VERY likely that was most of it. His two most productive years have been when he's had other weapons around him. The past two years where we had almost nothing else the production suffered. I think it's pretty obvious that was the main reason.