I disagree that he's a selfish ballhog. I also don't think it's a bad thing to have a great shot maker who's clutch in the big moments. In fact, why would you not want someone who can take over in those situations? Isn't that what every franchise and fanbase pines for?
Team ball has its place, but clutch individual players also have theirs. How many big shots did Bird have in his career? A heck of a lot more than McHale, Parish, Ainge, and DJ put together. Those were great players, but they weren't Bird. Similarly, guys like Bradley, Smart, and Horford will occasionally come up clutch, but they're no IT.
This isn't to say that IT is on the same level as Bird, so please don't misunderstand me. My point is that we, as Celtics Nation, have a great scorer on our team. Great scorers are hard to find, and clutch performers even harder, and we haven't had either since Pierce/Ray/KG several years ago.
And Bradley, the team's second-best shooter, isn't even playing right now. Horford's shot poorly the last couple of games, and has failed in the clutch a couple of times this season (on bunnies, no less). And Smart is usually a subpar shooter.
And it's not like IT is rarely passing the ball, averaging 6.3 assists per game for the season, 6.7 over the last 10 games.
Given these particular conditions, why would anyone want the ball in someone else's hands?
I guess some Celtics fans want a team wherein virtually anyone can have the ball in the closing minutes with the ability to make winning plays. Well, all the rotation players on this team have the ability to make various good plays—clutch D by Smart, clutch blocks by Horford, etc.—but none of them is capable of consistently being the guy. Even on an all-time-great team such as the '86 Celtics there was only one.