Confidence is huge, but arrogance can be annoying. I follow him on IG and a lot of his posts strike me as the type of guy to have a bit of an abrasive/arrogant personality. Not saying that is necessarily bad, or true. I'm just speculating that, as you both have said, that could be the issue. Speculating being the key word there. Maybe, hopefully, they are just trying to humble him, make him fall in line a bit. I doubt they have it in for the guy, they know he has talent and it's in everyone's best interest for him to work out.