Answer me this:
Have you ever heard any grumblings from the team about the issue you're suggesting?
Have you seen any -- any whatsoever -- evidence of it play out on the court?
Do you see anyone on the team not passing to Buddy?
Do you see any arguing between players about shot selection?
Since the answer is resoundingly "NO" to all of the above, it's a complete non-issue. Notice how the players are all smiles out there and there's never any finger pointing? It's because our players have great chemistry, and the team really gets along well, and support one another. To a man. They get along swimmingly.
As for how I know, logic, theory, empirical evidence, and some informed insight about locker room dynamics. You're perfectly free not to accept that at face value, doesn't matter to me