Browns 1991-1995 - bad
Patriots before Tom - okay
Patriots with Tom - Great
Patriots after Tom - Bad
BB is a great coach but I don't think it is completely unjustified to question his methods and call him some infallible GOAT. Andy Reid has arguably had more diversified success across multiple teams, GMs, QBs etc. Having Tom was obviously a huge boon to Bill.
I'm not saying Andy is better than Bill but he has certainly proved success under a variety of situations. I think people are allowed to call these discrepancies out, it isn't revisionist history, Bill's record without Tom Brady is poor, and that's a decent sample size at this point.
ask yourself this question, could andy reid get more out of this Patriots team?