You could argue that for sure, but I still don't blame Mcdaniel.
If the docs clear him to play, you go with what the doctors say.
At the end of the day it is a business with tens of millions of dollars on the line for Mcdaniel.
If he goes agains the docs and sits Tua out because he is a "good guy" and the dolphins season implodes (which it probably would), then you can bet Stephen Ross would be looking for a new head coach and Mcdaniel probably doesn't have this new contract extension he just got.
I think it is easy for us to judge him, but put yourself in Mcdaniels shoes