We are all different; we have differing tastes. Life would be boring if we were all the same.
Some people are very blasé about bodily functions. They will happily leave the door open when they are on the toilet so that they can converse to friends and family. They won't mind company (that's defecating and stinking out the room) whilst having a bath.
Men use urinals and most are happy to pee standing next to each other. Men seem to have less inhibitions about urinating and defecating in public.
Some people have mobility issues or other health needs and may not mind the lack of privacy - having a more accessible bathroom may be a safety precaution.