I would be seriously pissed if he got fired even if they lost every remaining game 65-0. Greatest coach of all time gets to retire. Kraft can tell him privately at the end of the season either retire or you will be fired. But the official message must be it was BB’s decision.
1. He isn't the greatest coach of all time.
2. Nobody gets to decide when to retire. The NFL is all about "what have you done for me lately" and Belichick has done nothing but go downhill ever since Brady left. Look what happened to the greatest coach of all time after the 1995 season. The official word is that he stepped down. But so did Wannstedt supposedly. That's how Huizenga handled firings.