He doesn't...not like his job. It's a little much, sometimes, and it's almost certainly not the healthiest way of dealing with his issues, but it's fun and he gets to be creative and it's not like he'd be better off doing costume design for someone other than a pop star.
It's just....Gabriel Taylor is extremely, extremely himself, which is not actually a bad thing but it does make it nice when Sasha can have a moment to breathe.