Actually Mourinho is comparatively rarely challenged. He tends to challenge others, including his own players, who generally listen to him (even if they don't initially welcome the criticism) because he passes the "show us your medals" test. He can point to his phenomenally successful career and say "THAT's why you should respect my opinion".
The football authorities obviously discipline Mourinho for challenging them from time to time, but they use those mechanical in-built sanctions from a position of weakness, because most of them cannot point to anything in their career history even remotely worthy of earning the respect.
True authority comes from tangible achievement.