Being a runner and even straight line speed are not the primary traits I look for in a QB's movements, but maybe I'm reading more into Lashlee's comments. Ryan Tanny is a + "athlete" and was even a WR in college. In the open field, he can really run in a straight line. He can barely move off his spot in the pocket, though.
I rather have any non-runner QB who can bounce around in the pocket. Maybe that's mental processing? Maybe it's just early game discomfort? But, it's hard to "trick" short area movements. You either move your *** off the spot or you don't. And, some "great athletes" can barely manage their pocket. Jalen Hurts is a great athlete. I rather watch anything else other than his constant backward drifting into oblivion.
Again, none of this is to say Garcia can even do these things or TVD cannot. We've seen them COMBINE for less than 30 pass attempts against teams trying to do bad things to them.