Is that a news youtube channel for sports? that's a good if there is no punishment regarding the disagreement of players whenever they have a match.
From what I found, the league would reduced their salaries 
.To confirm it. I found this article:
Quote
The league is reportedly not requiring its players to participate in the season restart if they are uncomfortable doing so. Players who voluntarily sit out would lose a portion of their salaries, but would otherwise face no consequences.
Source: https://www.google.com/amp/s/www.si.com/.amp/nba/2020/06/13/kyrie-irving-nba-season-restart-orlando(Phrase in bold is what confirms it)
Much better than going to into any sort of legalities. And it is understandable considering the situation they have right now in their country. Loads of confirmed cases, and an on-going protest against racism in some other state. Well, some players like Malcolm Brogdon, and Jaylen Brown, you name it have found participating in the protest.
I'd rather choose health but everyone doesn't have the same situation.