One of the easiest and most common criticisms of Aaron Boone, and any manager really, is over bullpen usage. With the benefit of hindsight, it’s so easy for us to armchair manage and say what we would have done differently to win a game. Crucially though, bullpen usage was a strength of Joe Girardi, and I think there may be something here about poor bullpen usage.
It is easy to anecdotally critique a decision based on how it works out or if it seems to make little sense, but it is harder to quantify bullpen decision making.