What else is he going to do....I mean, who would hire a person like that?
If the alternative was starving to death, he'd take off the pink shirts, pull himself together, and do what he had to do in terms of behavior to hang onto a job. He can only indulge himself with this sort of idiocy because he doesn't have to fit in with the work world. We're making it possible for him/it to behave like this.