Because on top of being arrogant Mourinho was tactically much better than the other coaches of his time, same went for SAF.

But on the flip side, look at Mourinho for the past years. He loses his dressing rooms pretty fast, Conte also struggled at Spurs and so on.

Guardiola is pretty arrogant himself but since he’s by far the best manager around players rally behind him and those who don’t just get sold or loaned out