"Show me a QB who runs and I'll show you a loser"- RG3's a quote from RG2 (Robert's dad) this summer
What Robert has failed to do thus far this season is run at all, even when the obvious opportunity presents himself, thusly making himself a 1 dimensional QB. If he wants to be a pocket passer, that is fine, but that also takes several years to reach an elite level, you don't become a star QB from the pocket overnight.
Neither Manning was, Brady wasn't, Rodgers had an awful 2008 after riding the pine for 3 years (Packers went 6-10), Romo sat on the bench for several years before starting, Flacco still really isn't (he is very playoff clutch but nobody would consider him a super elite pocket QB), Rivers sat on the bench for 2 years and never become really elite, Schuab was a bench warmer, Cutler has been up and down, Stafford has been injured, Brees looked awful for a few years and didn't explode as a pocket passer until his 4th season in the NFL.
It is fine if that is Robert's goal, it'll take a little while though. What made him a unique and dynamic QB, what makes him really special, is not only the throwing ability (which he oozes as evidenced by throws on Thanksgiving and other games last year) is his mobility, which right now he is simply choosing not to take advantage of.
There have been multiple instances in both games where he could have picked up a first down with his feet, but chose instead to throw the ball (usually incomplete leading to a punt)
There have been 0 rollouts or bootlegs (both staples of the Shanahan system) and clearly no read option run.
If he isn't healthy enough to do those things, he needs to sit. If there was a conscious decision made by him and the coaching staff that they would go pocket or nothing with him and he wouldn't run at all, well I frankly think that is a big mistake and it'll be a long year in DC