I am not afraid of other naked people, but I have had it once too many that certain people in e.g. a hotel sauna (for context, this was in some boutique hotel in Southern Germany) do not respect personal space, and the whole sauna naked thing becomes performative and annoying.

Once the nut-sack of a 160kg weighing Bavarian man makes a near hit with your chin as the man tries to climb over you to the bench at the back... anyway.

I found this with a significant amount of the naked sauna goers t.b.h. the claim of additional health benefits has been thrown at me, which is such obvious bullshit, it merely emphasizes the performativeness of it all.