Trans people can and have been using the toilets that match their gender for years without issue.
This is about the third time today I've seen the 'there is no problem' statement, by which you can only mean 'trans people have had no issue' because here are women telling you about the issues for them. They've been telling anyone they can get to listen for years now. Women are stakeholders in this too, and just blanking them and any issues they raise isn't the same as there actually in reality being no issues.
it’s actually having a negative effect on many cis people too; people whose appearance doesn’t fit the stereotypes of male or female are increasingly being challenged for simply going into a public loo.
Where's the evidence on this please? Non anecdotal, since this is never acceptable when women try to talk about negative effects on them. It's interesting too that the only negative effect being cared about here on women is one that benefits the self ID argument: there's certainly no care or interest for women regarding any of their other raised issues.
And hang on a minute - I thought you just said there were no issues? Which is it?
Having facilities that everyone can use – toilets and changing rooms with private space – is really sensible
God, yes. Wouldn't it be? So in this self ID system where women's single sex facilities have all become mixed sex, what are you going to do with the female people who can't use mixed sex spaces? Where do they go please? Because inclusion, diversity, intersectionality, kindness, having those facilities that everyone can use with that including all females? How does that work?