No it shouldn't. 'Belief' is a protected characteristic because beliefs are not facts. You can believe the world is flat; you should not have to defend a belief that the world is round.
That would seem like common sense but unfortunately that would leave evidence-based 'beliefs' such as:
'The world is round'
'Humans can't change sex'
'The pope is a catholic'
... etc. unprotected in equality law.
Maya's case relied on a previous case that established that a belief in climate change was a protected belief, despite being based on solid evidence.
In that case (Grainger) the judge said:
… it is not the function of the Tribunal to examine the beliefs before it. Instead, it is the function of the Tribunal to analyse those beliefs to see whether they engage relevant legislation.
(this is somewhere else Maya's judge went wrong, he spent far too much time interrogating the belief itself when that was not his job).
Out of the Grainger case came five tests that are used to decide whether a philosophical (i.e. non-religious) belief is protected:
-
the belief must be genuinely held;
-
it must be a belief and not an opinion or viewpoint based on the present state of information available;
-
it must be a belief as to a weighty and substantial aspect of human life and behaviour;
-
it must attain a certain level of cogency, seriousness, cohesion and importance;
-
it must be worthy of respect in a democratic society, not be incompatible with human dignity and not conflict with the fundamental rights of others.
ukhumanrightsblog.com/2010/01/18/the-grainger-case-a-double-edged-sword-for-climate-change-campaigners/
The judge decided that Maya's gender critical beliefs met all of these tests except for the last one. I'm not very clear myself about how the second of these tests applies to beliefs based on solid evidence but the judge had no problem with that part of Maya's argument.
It doesn't make any sense. None of this shitshow makes any sense.
But if we can get it established in law that a 'belief' that humans can't change sex is is a protected belief, then it means that any woman can challenge her employer's batshit diversity and inclusion policy, and if she is disadvantaged or sacked as a result then she has legal protection.