It is an extraordinary position to take to dismiss a team principal's contribution to the team on the basis that his interviews/celebrations are annoying.
I think he plays politics and the media exceptionally well in the pursuit of getting what Red Bull Racing want. I think he has kept a lid on a tense driver situation for 5 years. I think he showed his shrewdness with Arden, and carried Red Bull along in the same manner. I think he ensured that Red Bull were shielded from the excesses of Dr. Marko's experimentations - the Klien and Liuzzi situation from 2005 was never perpetuated at his team.
In other words, I believe he is a very good team principal, and that is why they've bothered to stick with him all these years.