That's what I was thinking. Jay Gruden was a stabilizing force when he took over, and he had a reasonable head coaching stretch. He took over at a time when Washington really needed some continuity at a minimum. Rivera's just been more of the same, just with better defenses instead of Gruden's offenses.
Incidentally, I'm surprise Gruden hasn't gotten another shot. I didn't think he did especially poorly as a HC, factoring in he was under Snyder.
Honestly, if it didn't apparently take so much out of our players, we should be running it for a 2pt conversion every time. A 70% success rate would make that the analytically correct move in neutral situations.