Year after year, Theismann proves all the hits to his head were more impactful on his life after football than his single devastating career ending leg injury.
Any general manager will do a risk assessment for acquiring Romo. Numerous variables such as the Romo's potential productivity, health, evaluating offensive personnel who can best assist him, how many butts Romo can put into seats, etc., will be taken into consideration. If the risk assessment is favorable, a GM will attempt to acquire Romo. If the risk assessment is not favorable, a GM will not do so.
It's as simple as that. All the emotional hogwash that some people, including Theismann, is just that. The NFL is a multi-billion dollar industry. It didn't grow into the mammoth that exists today due to some misplaced soap opera mentality. Teams have taken countless risks over the decades. It is completely illogical that no general manager will not contemplate acquiring Romo. That is ignorance personified. Thankfully, everyone in the NFL (or the world in general) aren't simple-minded.