This reminds me of a situation I found myself in a few years ago. I was on my own with four children, one baby in a sling. twins age three and an 18 month old. I was taking them away for a week.
stopped at a service station. Went to loo. Disabled toilet closed. Baby changing closed.
so I am in the main ladies toilets, and queued. As I got to the front a very distressed lady was crying saying she was lost and needed the toilet. Everyone ignored her.
sadly, I sorted the children first, and by this point she was wailing and crying.
I popped out to the corridor and there was a very worried elderly man. The disabled and maternity toilets closed. He had to send her in to ask for help.
I went back in, explained it to those there, everyone happy to help with my babies, children, but not an adult. I helped her to toilet, poor women sobbing. Cleaned her up. Out we went.
lots of people looking in sympathy. Lots of people absolutely wonderful with my children.
nobody able, willing, comfortable to help lady.
I think the only reason I was able to was because he was so distraught and said to do so. He couldn’t possibly go in to a female toilet.
so yes, absolutely ok for him to go in, and myself and all the lovely ladies who helped me said the same.