Think y'all are underrating Tua as a quarterback. He's got some limitations, but what he's good at, he's good at. There are some other things outside of the white lines that are very fair criticism and its also fair to think he's damaged goods.
Before he had his head bounce off the ground like a rubber ball multiple times, I thought he was taking a bit of a leap forward as a player...ymmv on the current condition of his brain and his future. Dolphins should probably run with two very strong backups and keep an eye on the draft and see what they can find.