RGIII has been horrible with Redskins and got a job last year starting for the Browns.
Smith didn’t really do enough to be better or worse than anybody. He’s a backup, he makes backup money, and nobody cares where he lands. Kaep would be going in as a starter for much more money.
And RGIII was fine until the injury, especially coming back early from the injury. The Browns were hoping that the time off would do him good... then he got injured... then the next 4 QBs to replace him got injured. Bad year for the Browns. But they also picked him up cheap.