Do you think other neurologists will no longer want to be associated with the NFL? Seems like too much risk to the doctor (meaning either their reputation/practice/future earnings) given that all parties involved want to get the player back into the game or the next game. Unless the doctor is always leaning towards being more conservative and trying their best to keep the player out. Seems like sooner or later, that one of the players that they ok, will get hurt shortly after returning, and then have their assessment questioned.
With other regular patients you are not rushed and have time to do a full evaluation and they are not putting themselves at risk in the near future.