The Bills strategy on defense is to be passive and let crappy teams make unforced errors. And it works really well agains those teams. It collapses in the face of teams with talent and aggressive game plans. It seems unlikely to ever work deep into the playoffs.
In real life coaches get to the Super Bowl within a couple of years if getting an elite qb on board. McDermott has had a long chance. He is currently the longest tenured coach without a Super Bowl win for his team. McVay , Taylor and Siriani are examples of recent guys who have gotten to the Super Bowl with a much quicker process.
It doesn't make the fired person accountable. It means the person making the change is taking accountability for his own actions and corrective action. The second decision could wrong too. Your statement is just silly.
Actions speak louder than words. And he CHOSE to keep the staff from before. This was HIS decision. He owned up to the mistake, and made a new decision.
Sure for a recent example, Miami's head coach admitted he hired the wrong defensive coordinator, and fired him and replaced him with a new DC. Many many such examples.
Thats my point. He says its starts with him, and doesn't say what he could do different, and then immediately shifts to blaming the talent for not being physical enough. He seems to be the classic passive agressive personality.