While I never agreed with all the anti-Ray sentiment, there is a fundamental difference between allowing a trade and leaving as a free agent.
Ray Allen did a smart move - leave when he can set the terms. He probably ends up at some mediocre team if he hadn't left for Heat. Ray Allen could not control the decision of Celtics to tear it apart, but he could control his destiny.
he is not wrong for thinking about himself and wanting another ring. But to the fans, it feels like betrayal. I'm sure time will eventually make us forget about this.
BUT, the biggest difference, is to a die-hard fan, we want to see our idols play and retire on the the same team. That's why we were so sentimental towards the departure of PP and KG and not angry vs the Ray Allen scenario.
If KG and PP really really REALLY had a choice, I am sure they would want to stay and retire a Celtic, maybe 8-9/10 times, the result will be the same. Heck, KG given 10/10 times would choose to stay
Ray Allen on the other hand, I cannot speak the same