That's a big problem in case the process of trade between these two team proceed. But I doubt Sixers will gamble to that since Embiid is really important to them, they will try to convince Simmons to play one more season instead of having any problem with Embiid if Irving paired with him.
We know that he is an all-star but his attitudes?? We don't need attitudes like that in the league (at least for me).
It's done by voting, once you have good stats and you entered into voting, you might probably be chosen to be in the all-star game, this is what happen with Irving. Also, we can't blame people voting for him as the majority of the fans do not know news about the player's attitude or anything related to that which is not a big deal for most of us.
If the player plays well, he gets fans, that's how it works.
He sells his talent and there's no doubt that he really has it all and fans really love how he showcases everything.
In terms of attitude, fans don't have any deeper knowledge about that they only saw Irving played, and that's all they need to
Idolized him. Only those near him and the management who's paying him who really been affected by this attitude issues.