If she is discussing a workplace policy on single sex toilets with HR, then I don’t know, because the situation did not arise, but I would think may be one where correct sexing is important.
Exactly. The TRAs require MF’s views on biological sex existing and being relevant to equal discrimination, regardless of how ‘polite’ she is. The arguments put forward today (in my opinion) demonstrate that they don’t.
Quite simply, the Equality Act says sex is a protected characteristic. Ergo, sex exists. Ergo, MF is legally able to talk about it, and her ability to do so shouldn’t be wiped out by the existence of trans-identifying people.