Once you get onto the ground of 'unless there's evidence' it's fine...
you're into:
how much evidence is necessary - ie how many incidents under what circumstances (also known as please state the acceptable collateral damage numbers, how many female people have to be harmed)- before it's regarded as enough of a problem to take action? Because women are used to the dismissive 'isolated incident' (or one bad apple/no true trans/ yada yada) when they do show incidents that have undoubtedly occurred.
What sort of evidence will be regarded as acceptable - because women are used to being told it's from the wrong source, or the goalposts being immediately shifted to not enough proof that harm was truly caused or alarm actually happened (to a degree that male people should take notice of.)
What constitutes acceptable evidence? Does there have to be a police report? Filmed evidence? A conviction? Because even a conviction in the Karen White case did fuck all in changing things for women, and hello, rape reporting, prosecution and conviction rate in the UK right now?
And what constitutes risk? What has to happen to sufficient numbers of females, proven beyond all doubt, in order to have a re think on the truly stupid and anti female approach of throwing open the doors of spaces where females are undressed and vulnerable to any male who wishes to be there, and give some thought to the right of female people to feel safe and not be alarmed, harassed, embarrassed or physically and sexually harmed?
Anyone else just staggered we're having to consider negotiating with males about female spaces (which evidently they own and run for male benefit, because females aren't getting a voice in this) if they would please, pretty please, think about gate keeping them a little better for females if females can really really prove thoroughly that things aren't working? It just defies belief. I have never in my life felt so utterly worthless and unvalued as a female in the UK as I do at the moment. Which incidentally is based on my being born with female biology. And nothing else.
Aka how many female people are justifiable collateral damage?