The lone voice of sense on there reminds everyone of the Forstater judgement:
'111. Most fundamentally, the Claimant’s belief does not get anywhere near to approaching the kind of belief akin to Nazism or totalitarianism that would warrant the application of Article 17. That is reason enough on its own to find that Grainger V is satisfied. The Claimant’s belief might well be considered offensive and abhorrent to some, but the accepted evidence before the Tribunal was that she believed that it is not “incompatible to recognise that human beings cannot change sex whilst also protecting the human rights of people who identify as transgender”: see para 39.2 of the Judgment. That is not, on any view, a statement of a belief that seeks to destroy the rights of trans persons. It is a belief that might in some circumstances cause offence to trans persons, but the potential for offence cannot be a reason to exclude a belief from protection altogether
....
Where a belief or a major tenet of it appears to be in accordance with the law of the land, then it is all the more jarring that it should be declared as one not worthy of respect in a democratic society.
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Just as the legal recognition of Civil Partnerships does not negate the right of a person to believe that marriage should only apply to heterosexual couples, becoming the acquired gender “for all purposes” within the meaning of GRA does not negate a person’s right to believe, like the Claimant, that as a matter of biology a trans person is still their natal sex. Both beliefs may well be profoundly offensive and even distressing to many others, but they are beliefs that are and must be tolerated in a pluralist society.'
Bolded the key definition there, although 'gc' beliefs are spelled out a little more fully elsewhere.
Since the SC now appears to share roughly those beliefs, it'd be very interesting to see someone try to demonstrate that 'humans come in 2 sexes, you can't change sex, sometimes sex matters' is an 'extremist' belief and not WORIADS.