This and "appearances". Some don't want him gone because the "appearance" of Auburn firing what some would consider a successful coach would just be intolerable.
Is Auburn considered a Power Program in the landscape of CFB? Check
Can you win an NC at Auburn? Check
Think of the rather short list of schools that can check both of those boxes. How many of those schools would endure 4 or more losses 6 years running (most likely) without a coaching change? I can't think of any other than Auburn. I would say we're a very tolerant fan base.