Not sure what point you are trying to make, I agree that Puel shouldn't have been sacked.
Is you point that you are trying to make the fact that it makes sense to hire a manager with some experience and who has actually achieved something?
Puel played almost 500 games for Monaco, had managed for 17 years and won the French Championship with Monaco, the Intertoto Cup with Lille and got Lyon to the Semi Finals of the Champions League before we hired him.