I think we make too much of "Nagy"s offense. A QB has to be able to drop back or take the snap via the shotgun, read a defense, and hit the standard pass patterns: outs, ins, slants, wheel routes, bombs, etc It would also be nice to be able to rollout and run boot legs. Foles and just about any other able bodied NFL QB should be capable of running Nagy's offense. If he can't then Nagy has to modify it to fit the QBs strengths.
And BTW, do you see Tom Brady running around all day like Russell Wilson? Mobility and pocket presence doesn't mean you have to have the speed of Kyler Murray, but it certainly helps. Get a solid offensive line and you can execute just about anything.