I'd put it more like he cares about winning, tries his best to help his team do that and in the process puts up a ton of stats with his insane usage, but doesn't realize that maybe him having insane usage is not necessarily the best route for the team to be successful. Two pretty good offensive players (well, Melo used to be good at least) joined his team this year and Westbrick still led the league in FGA's. So yes he led the league in assists, but he also took more shots than anybody. He just has the ball all the friggin time. Very much a hero ball player in an era when most teams are trying to get away from it. You can look at his teammates and say wow Cory Brewer had the 5th most FGA's you don't want him getting any more, and maybe his high usage gives them the best shot to win. But with a guy like PG joining that team, I'd say nah. Westbrick was near the bottom 5 of their team this year in eFG% and TS%. If anybody on that team should have been getting 21 shots a game, it was Paul George.
All the hate and criticism Lonzo Ball got about his shot this year, his rookie season where he was constantly faced with a spotlight of criticism (his shooting numbers will improve), and his 3P% was still higher than Westbrick's this season of 0.299.
Of course he does a ton to help his team win and most of his rebounds and assist do that, I just think there things he could change in the way he plays that might help his team win more games. But he never seemed to consider that at all this season, even while they at times struggled to win games when they were supposed to be more talented.