The answer is it's Horner. He's the man at the top enabling the entire organization build that rocket ship race car. There's half a dozen other drivers, at least, out there who could beat Perez and bring the championships home with that car.
Yes, that is the question for RB Racing. The basic question for RedBull is: do they want their brand linked to this racing team, or these team members?
there is no one senior enough to actually suspend him unless the Thais do?
He's just an employee of Red Bull GmbH. He can be fired like any other employee and if he's causing harm to the image of the Red Bull brand (racist comments apparently weren't enough), I don't think even the Austrians would want to support him.