Look. It's been tried. It's been a complete mess. It does not work for female people. It is impossible to make it some males and not all males. And anyway, evenonemale will, regardless of how that male person identifies and what a lovely person they are, still exclude some females by their presence from needed female provision.
Sex does not change. It does not go away. Female people cannot overlook this in every circumstance. Some facilities and resources must be for female people only, to meet female need, and male feelings don't get to override their needs being met and females being able to have services too.
Male people with a problem with this are just going to have to figure out that not everything is for them and not everything is about them all the time, and if their needs are met they need to let other people's needs be met too. And not expect to control and gatekeep female people's lives, services, resources to meet their own personal needs.
Well bloody said.