I think people are really forgetting or glossing over the general mood at that draft class's QBs because in the present, Watson and Mahomes are really good, with Trubisky at least solid.
Tons of mock drafts, tons of pundits, a very vocal at least half of this board, said that these QBs probably weren't even worth first round picks, or were worth later first round picks, and it would be smarter to wait until the following year when there was a bountiful crop of guys coming out.
A first round pick to move three spots, or one spot, is almost never worth it when talking about unproven players. I know we can look back and all wish we had Mahomes, but remember, this was a team that at least in theory was supposed to contend one last time with Palmer at the helm. Sacrificing our future like that would have sent this board up a wall.
Especially because we would have had no idea that the Chiefs or Texans were offering up what they did. We would have looked like an organization that got fleeced for a QB we all would have thought would still be there at #13. The funny thing is, too, if we move up for one of those guys, I bet Watson or Mahomes don't go before #13, since everyone had us circled on the map as the team that was going to go QB. The Texans only vaulted us because they knew we'd take Watson.