www.peoplemanagement.co.uk/news/articles/gender-fluid-non-binary-workers-protected-under-equality-act-landmark-ruling-shows?utm_source
Of course this employee shouldn't have been subjected to abusive jokes and insults, but equally the organisation should have dealt with this under harassment policies.
Instead, the Equality Act has been interpreted in Employment Law to include non-binary and gender fluid because even the govt agrees that 'gender is a spectrum'.
Barrister is Robin Moira White, a transgender person.