The fact that Pierce didn't bolt when we were terrible means something.
Isn't pretty much common knowledge that Pierce was going to demand a trade in 2007 if we got the #1 or #2 pick and didn't flip it for a star?
The fact that Dirk struggled so long in Dallas without going ring hunting means something.
Man did Dirk every struggle. Going to the playoffs 10 straight seasons before this year, going to the Finals once, having the 6th best record in NBA history another season, and having an owner willing to spend whatever it takes to win and constantly re-stacking the roster.

Your points are poor I think.
The fans aren't loyal to the players. I've heard booing at Celics games, I saw a lot of empty seats at Celtics games between '93 and '07. I've seen a lot of threads claiming we should trade our Big 4 now and over the last 3 seasons.
The teams aren't loyal to the players. The Celtics traded away Perk, traded away Antoine (who loved playing in Boston), traded away good guys and fan favorites like Eric Williams and Tony Battie during like a 5 game winning streak, didn't reward James Posey with a contract after he helped us win a championship, etc.
Why should the players be loyal to the fans or teams?
And that's just looking at the Celtics who have one of the best owners and GM and some of the best fans in the game. It gets worse when you look at other teams.