The conflict of course is that the point of sending astronauts to space is to learn about the medical effects of the space environment on human bodies.

Basically they are participating in a very expensive publicly funded medical trial. So the goals of that need to be balanced against their privacy.

I’m not advocating that NASA should publish high resolution pictures of astronauts with puke stained shirts. But they could say “one of the astronauts experienced symptomps commonly associated with intense motion sickness which started after disembarking the vehicle” or “one of the astronauts had intense headaches” or whatever describes the situation.

If the astronauts are not okay with that level of transparency they should pay for their flight with their own money. Is my opinion.