Yes Riley went after Stanton, but Johnny wasn't going to walk in and take the starting job from mannion. Riley probably wanted to redshirt him, and have two years to work on him before he had a chance at the reigns
As of now all these Qbs are in year one of having a real QB coach. Tommy gets the early nod because of starting experience. Spring will play out, until then its almost asinine to think anyone other than Tommy would take the first snap if we played a game tomorrow