@NiceGerbil
Reported to WHO exactly? And on what grounds?
Report to other people or authorities, depending on the situation, availability and degree of concern: other people, HR, security, police. On the grounds of suspecting them of violating single sex spaces.
Women judging other women on appearance is wrong. Anti feminist. Gatekeeping 'womanhood'. Oppressive for women who don't measure up to some feminine standard of appearance. Etc etc.
This is question begging. When I see someone who claims to be a woman or who is in a female only space, I don't know if this is true.
The expectation is that women and girls make no assumptions based on looks, clothes, any aspect of physical appearance.
Whose expectation?
It's cruel and transphobic to give any reaction, any hint that you are even thinking ... Erm. That's a bloke.
In other words, "be kind!" - Seriously? Women should set some safety concerns to avoid the possibility of causing offence?