Very brave of you to tackle this subject.
My views on this issue have been changing over the last few years, and perhaps they will continue to change.
Regarding toilets and changing areas, I like how the UK has been moving more towards invididual cubicles. In places where we used to have toilet blocks seprated into male and female, we now have individual toilets with their self-contained facilities. Similarly, with leisure centres, it's becoming more common to have one changing area for everyone, but with individual changing cubicles.
I much prefer this. I don't particularly want to urinate or undress in front of ANY stranger, regardless of what's between their legs or how they identify.
I try to approach life with an open an accepting attitude towards everyone else. I can't ever fully know what it's like to be someone else, as I haven't had the same experiences they've had. But if someone feels strongly about who they are and how they identify, who am I to argue with them?
The line "trans-women are women" is fine until it comes to sports or medical matters. For example, in a medical emergency, if someone is bleeding from their groin, it matters what's down there. If they are a biological female, they might just be menstruating. If they are biologically male or a transgender person who has had a gender reassignment operation, it could mean something catastrophic is happening.
In medical emergencies, do doctors tend to stick to the black and white shorthand of "male" for someone with a penis and "female" for someone with a vagina? Because in some situations, there's something more important at risk than a person's feelings.
Anyway, thank you for sharing your thoughts. Thank you for the links to other articles. I will take a look.