I didn't say anything about firing him after this season. You have a young, mvp quarterback and a coach known for coming up short in the playoffs. How many seasons without getting to the SB are you going to give him?
As many as they need. Who are you going to get that's a better option than Andy Reid? Even for great QB and coach it just takes time to break through. It took Peyton Manning nearly a decade. Brees and Payton chipped away at it for something like six or seven years.
Sometimes I think that the Patriots' success has kind of skewed expectations for fans. They're an outlier. For most teams it's really really hard to even get to a SB let alone win one, even with an elite QB.