Fair point - bad performance whichever way you look at it. What needs to be challenged is that they don't seem to be learning from experience. In this interview SL boasts of how much experience he and Dawe have - going back to 1996. Now he complains that SOD didn't turn anything around in 10 months.
Part of the despair generated in the fans by the SOD dismissal is that he was positioned by them as being instrumental to the delivery of a long term strategy. The fact they they had a strategy was encouraging and they seemed to have a plan - one which included short term pain.
We'll never know if SOD's infant team would have manned up and avoided relegation. SL has panicked into another short term fix. By all accounts Cottrill is a short term guy - He's been manager at least seven times as far as I can remember since Chelthenham in 1998.
If you don't learn from experience, in life as in football, you die. If you won't take criticism and feedback, however it's delivered, you don't learn. Only arrogant, afraid ego-driven businessmen avoid putting strong characters with real expertise on their board.