Who said that? I'm just saying that Geno Smith went from bad to decent. Lance might can do that, too. If he stays here, it would likely be in a backup role.
I don't expect him to ever be the starter here or replace Dak. I expect Dak to get an extension before the start of the season. However, we should never stop wanting to improve a position or improve our depth. Anything can happen in this game, and despite the fact that the Cowboys have a 5-1 record with Rush at QB, we can improve the backup spot. I don't know if Lance will be able to do that, but I'm OK with exploring that possibility.
Frankly, I'd like to see us sign the Hohensee kid we had in for a tryout. The more QBs we try to develop, the better. Then, if Lance were to play good enough to replace Rush, Hohensee could move into that developmental spot. He probably would end up going the same way as DiNucci, White, McGee. But you'll never get a hit if you don't take a swing.