Nobody is paying a 100 million dollar 1 year luxury tax bill. Not even Golden State. 100 million isn't pocket change for anybody. That is a quarter of the way to a self-financed arena. That is a big deal, because if you are regularly dropping 100 million on the luxury tax, people aren't going to public finance your next arena.
I bet you Golden State does. That is nothing for how much money they probably make out there. If everyone wants to stay, they will stay and they will max them out.