The first time I went to France (about 60 years ago) I was at a service station on the autoroute (motorway) and popped into the toilets which had both urinals and individual cubicles.
As I was standing at a urinal a lady walked past me. I had a minor panic attack thinking I must be in the ladies toilets until I realised that there were both sexes represented. Having been brought up in the UK the idea of shared toilets had never occurred to me. To the French it was normal.
In the UK this has become a huge question with the issue of which toilet trans-sexual people should use. The decision in the Supreme Court was that you use whichever is appropriate to your biological sex.
I haven't been following the matter but the issue seems to have revolved around women's safety.
As Peter Cook used to say "It's a funny old world, Dud." Funny peculiar not funny ha ha I assume.