Probably not even a true story, made up on the spot.
I drank a lot of beer in Germany. We peed a lot. My wife and her female friends would often use the men's room to avoid standing in line for the women's. Never a single complaint. No sideways glances. No assaults.
The guys in there understood that they just needed to pee. They used a stall. No one was peeking in on them because nobody really cares... except gential obsessed politicians in America.