Put this question another way - Pretend that you are an NBA-level talent and a starter for the Celtics and had just missed the last two games with an injury - would you play in this All-Star game ? Don't pretend you are Irving, answer as if this is you.
If I’m healthy and ready to go absolutely. I’d go and represent the Celtics, jump in the scene and maybe make some connections/recruit.
If we’re interested in keeping Kyrie then it can only be a good thing to create good experiences with the Celtics. I’d rather that than him looking back on it with a negative shade of missing the All-star game this year because it might look bad. He doesn’t need to miss it if he’s healthy because people might perceive it to be a bad thing to play since he missed the last two games. I think that’s getting a little ridiculous.
It doesn’t matter though because he’ll get ripped whatever he does. If he misses it people will say he’s unreliable, injury prone, can’t stay on the court. If he plays he “doesn’t care about the Celtics”, and only about himself. All from a bunch of people who know nothing of his injury, while his team has said they want him to play
if he’s cleared.