I have not seen a thread about this; I fell across it on YouTube just now. (If I could remember how to post a link, I would do that. Perhaps someone could help?) She is clear, calm, logical.
I greatly respect Rosie Duffield's determination to speak out.
Surely stating we are a dimorphic species, and discussing the consequences of that, should be regarded as merely an expression of everday common knowledge, rather than being defined and deemed in law as a 'belief' WORIAD ?