As travellers, we're often, er, exposed

to different cultures. It's a good idea to be prepared to deal with those differences.
In Japan, Lady JDiver needed to use the WC. I pointed out the men and women entrances and laughingly said "I'll see you in there". I did. Japanese people in that situation just carry on without acknowledging the other gender's presence.
In Bali, we saw naked people bathing in rice field irrigation canals. The social coping mechanism is to act as if a naked person taking their ablutions are in essence invisible.
Back to Japan, there are still numbers of places that will ban people with significant tattooing from pools, spas or ofuro, because tattoos were mainly sported by made members of the yakuza (organized crime gangs that make mafia look like rank amateurs). And one would never, ever enter a soaking tub whilst soaped up!
I've visited and spent time in 98 of 196 independent nations, seven decades of traveling - still learning and loving it. Jawohl!