We actually have zero evidence that Young has a poor work ethic.
So I take it you weren't watching in the Summer League this year when Young was out there:
1) Standing around doing nothing when off the ball on offense
2) Standing around doing nothing when off the ball on defense
3) Throwing up non-stop bricks from three when he had the ball on offense
4) Watching opponents walk straight by him when on the ball on defense
5) Staring lazily at every rebound and loose ball, while making zero effort to go after them
Or in summary, just generally standing around doing absolutely nothing of value the entire time he was on the court.
Not to mention the sobbing face on the bench once he got hurt and started to realised he had just spent the past 2 weeks being significantly outplayed by rookies and D-league scrubs. Not exactly 'swagger' right there.