Why did Cavs let LeBron James play these games? Why did Bulls let Jordan play these games? Why are guys like Giannis, Jokic, Luka, Gobert etc playing these games atm? Perhaps because they are playing for their countries, matches where the NBA coaches (including JBB) and where the eyes of the basketball world are atm?
If in doubt, you might check a couple pages back in this thread and see what JBB had to say on the matter?
I understand some people love to watch on twitter dudes shooting 3's in an empty gym, but I for one prefer to watch quality basketball with actual playoff grit, fighting for the chance to play in World Cup next year.