If I was running the NBA I'd consider only allowing players, refs, medical, camera people in Orlando.
Require all coaches/assistants to stay home and do all work via cell phone/video/tablets/etc.
Obviously an older coach could get the virus and have it be life threatening. I agree its not fair to only punish older coaches. But just from a basketball perspective; think if a coach gives the virus to Dame or LeBron or Giannis and it costs that team their season.
The Lakers and Bucks have large leads over #2 seeds. After one or two games will they sit their rotational players the remainder of the 8 game "regular" season? I can't imagine taking the risk of playing them the last week if wins don't matter.