I have an entirely different interpretation on Kyrie than tarheels. While I agree that I would be upset if he left in FA, at this point, I just see him as a mostly quiet guy who wants his opinions to be validated. Narcissistic is not how I would describe his behaviors at all.
First, that team needed to be built around LeBron because he is the best player in the world and that is what is required. LeBron can be a bit obtrusive, which is fine if he genuinely acknowledges the quality of his teammates and lets them be heard, but that is part his fault and part the medias.
I can see why Kyrie feels a great sense of relief - Lebron did leave and that team is in disarray with its salary cap. In Boston, he is respected, admired, and on a great team with the potential to be even greater. If he leaves this situation, then he is a fool; but I am not going to judge him harshly until that happens.