I seriously doubt anyone wants Dak to fail, but some of us demand that if he's the starter he be the best player at the position. When the best player is standing on the sidelines, you're doing it wrong. Now if you want to argue that we don't know if Romo is better I'll say this - if Romo is only 75 percent of the player he was in 2014, he's considerably better than the Dak from December 11.
Prior to last night Dak hadn't given anyone much reason to believe that a big upgrade was even possible, let alone necessary, at the QB position. He had a 108 QBR heading into last night, which ranked better than all but one of Romo's seasons.
Changing horses midstream on the basis of a single game (and it really only was one game notwithstanding the attempts of many to suggest that he's been struggling for a few weeks now) seems reactionary.
I suppose if he continues to struggle the team needs to consider benching him in favour of Romo. It was, after all, on the basis of his strong performance and the fear of disrupting team chemistry and momentum that he was allowed to keep the job when Romo returned in the first instance. Those justifications will no longer hold if he goes into a tailspin and the team suffers as a result.
But I'd be slow to pull him even if he continues to struggle a bit. Frankly, I don't see this as a championship caliber team. And it's not Dak that holds the team back from reaching that status. It's the defence. If we had a defence that we could be confident would string together a bunch of games like yesterday's I'd be all for pulling out all the stops to take a shot at winning this thing, including by benching Dak in favour of Romo.
But there's a significant potential cost in doing so: you could damage the kid's psyche and consequently impede (or even reverse) his development. That might be a chance you take with your future (and arguably present) franchise QB if the reward is a realistic shot at the Super Bowl. But if that reward isn't realistically available because the defence is likely to hold the team back anyway, I think you have to be very careful about risking your future for a remote possibility of immediate reward.