It's been building. I think Bron going to Miami and building that super team rubbed a lot of fans and former players the wrong way. And from there it's just gotten worse and worse.
I hope Steph never leave GS, it wouldn't be right. He's built a legacy over there and it's easy to watch that team because of it. If you think about Paul George, if he stayed with the Pacers, his legacy would be that he's a Pacer legend like Reggie trying to win a championship and that storyline would write in it off itself. Same with the OKC Harden/KD/Westbrook. It's why I'm glad the C's didn't listen to all the bozos talking about breaking up Tatum/Brown. Those guys should be C's for their entire career.
I'm not against player movement, but if there's gonna be this type of movement for superstars, then the league should rethink about how they're marketing their product and focus on teams otherwise it's just gonna be a casual sport to follow.