This (and the post you quoted) is a key point for me in a nutshell: now that I've settled on atheism, I find much of religious belief to be non-sensical.
Transubstantiation, creationism, the idea that a virgin can give birth etc etc. If someone was in court expressing either a heartfelt or feigned belief that this was all true - much like Dr U and his belief that it's possible to be a female by way of self-ID and that biological sex is nebulous - then IMO it would sound completely mad. Not remotely WORIADS. Therefore, from an objective point of view, I'll accept that Dr U and others say that they hold a belief in gender identity and that it's just as WORIADS as any other belief that lots of people hold, or say they hold. But in both cases, "respectfully"** accepting that people hold a belief doesn't involve being forced to accept it as true.
Just as I wouldn't accept transubstantiated wine in blood banks, science lessons replacing the big bang with creationism, biology lessons teaching children that under some circumstances a human child can be conceived without sperm etc, I won't accept the Dr Us of this world forcing their belief onto society as if it's fact.
Thankfully Catholics, Protestants and others stopped all the religious enforcement in the UK a long time ago. Unfortunately, the radicalisation and harm (to self and others) associated with gender identity belief is more akin to how religion was historically enforced than the way that it fits in the UK today. Personally, I'd like to see gender identity belief viewed through a Prevent lens when it comes to children and young people being drawn towards it and how it might impact them.
But on the theme of this thread, the idea that the NHS thinks it makes sense to force non-believers to accept Dr U as a woman in women's changing rooms is appalling. Hopefully what we're seeing gradually happening in the UK is people waking up to the fact that gender identity belief is inherently extreme in and of itself, unlike common or garden religious belief, and it has tramped all over women's rights (men's too but to a lesser degree e.g. freedom of association for gay men where transmen are now self-IDing as gay men), freedom of speech and the safety of children and young people. Isla Bryson, women's sports, the Edinburgh Rape Crisis centre debacle, this NHS case and more all show it up for exactly what it is in relation to women's rights.
**I'll accept that it wasn't particularly respectful that I called both religious belief and gender identity belief mad when examined in detail. FWIW I don't do this IRL with either of them - I just say that I don't believe in god and I don't believe that we all have a gender identity.
Edited