You know Snappity your outright refusal to engage to try to find ANY common ground or mutually understood terms, no matter how hard your ideological opponents try reflects really badly on you.
You ask what relevance SEX has wrt fitting rooms?
The answer is that fitting rooms have always been segregated by sex.
Because the sexes have different bodies and fitting rooms involve undressing those bodies.
And because the sexes are so physically different that they demand privacy from one another.
It is so obvious to readers that you refuse to engage with facts about sex because you know that to answer those questions dismantles your whole position. And that is why we continue to ask these questions.
Sex exists.
Females exist.
Males are physically, reproductively, biologically different to females.
Females have the right to be recognised as the sex they are.
Females have the right to boundaries around themselves.
Those boundaries will exclude males.
Gender has no relevance to any of those statements.
It exists only to make the case that female existence and recognition of the female sex should be denied so that female boundaries can be breached.
No wonder you don't want to engage on the matter of sex.
We are keeping our boundaries, pal.