Tannehill was absolutely dreadful in the Patriots game, and the Bengals game was such a disaster / downer that I don't fault people for being super down on him. We are fans, we are emotional, we live in the moment, and quite frankly, he was AWFUL in the Patriots game. Yes, we know now that he had a shoulder injury and in hindsight it explains why he was throwing the football like a wet noodle, but here's the thing: he was still awful.
If you're too hurt to throw, then you shouldn't be in the game.
And every QB that has ever played the game for any reasonable length of time has also had dreadful games. That is a key point that is completely missed by so many.