I do watch games. A lot of games. I don't see it.
I see a very good player with exceptional durability, but not a guy who changes games the way David Johnson and Gurley did pre-injuries, or Saquon looks like he will, or McCaffrey and Kamara can. Where are the "long runs" you're talking about? He's an okay receiver, but by the numbers and by eye he's not a special one: sure, he can catch a bunch of screens and dumpoffs, but he's not someone you move all over the formation and threaten multiple levels of the defense with.
Yes, some of this may very well be because the scheme limits him, but why would you pay someone for talents that aren't going to be used? (And why would you trust that he's exceptional at those things when you haven't seen them?)