What is so bad about firing a manager if ultimately results in more success? I mean, if Madrid win UCL this season, it would mean that in the last decade they won twice as many UCL as we did in our history,
while firing Mourinho, Ancelotti, Solari, Lopetegui, Benitez and Zidane leaving (twice). Why it would have been better if instead they fired only half of these managers and won only half of the UCLs they won?
Same for Bayern, Barca and co. There is nothing wrong with firing a manager if he does not perform. In fact, there is everything wrong about not firing an underperforming manager. ‘Fail fast’ is the philosophy of every other big club, the sooner you realize that you failed, the faster you can fix the error.