Due to the travelling nature of the employment im sure management allow the workers to self govern themselves to a point, not expect them to. Think about why wrestlers court was invented in the first place! Vince would certainly have known about it and as long as it didn't get out of hand he wouldn't have stepped in and stopped it, because it worked.
Lio's issue is that he's taking his title WWE Superstar too literally. He thinks the hard graft can stop.
If Triple H didn't have an issue carrying Shawn Michaels bags and the stories I've read of other NXT stars who were called up to the main roster handing out towels and water to the other wrestlers behind the curtain on tour, why can't Lio.
Drop the ego, listen and learn from others.
Too bad we never heard anymore of that Triple H fella, I heard he would have had quite the career! Said no-one ever, but will we be saying this about Lio Rush?