The NBA tries to be “woke” to appeal to the kids. They pushed out a team owner who was openly racist. They don’t seem to tolerate racist and homophobic jears from fans.
Most of the players are black, so they don’t expect them not to comment on BLM or to all stand for the national anthem. They have had some problems with players being anti-Semitic, they have punished them enough to get them to keep their mouth shut.