JR is not at all saying that SP doesn't deserve SSS because of her behaviour. She is arguing that NHS Fife behaved properly in sanctioning SP's manifestation of her protected belief, because the manifestation was so far beyond acceptable behaviour that it was not protected.
The Forstater judgment was very clear that it didn't give Forstater (or anyone) the right to eg be abusive. Iirc there was a whole very amusing thread about what the judgment didn't allow Maya to do, but there remains a serious point that noone has carte blanche to behave badly on the basis of a protected belief.
Presumably all the character assassination stuff is to add to the credibility of the idea that, although there was no shouting and SP had asked managers for help before speaking to BU, SP is the type of person who would behave badly.
I disagree with the analysis and think the approach is vile, but I follow the logic.
I also think JR is arguing that SP does have a right to a SSS, but that the CR remains SS even with BU in it.
This is where I lose the thread of her arguments, especially as she won't say what bio sex he is.
I can understand her not taking instructions on that, as we have seen BU say that he is a bio woman. If those were her instructions then, as she knows he is a bio man, she would immediately be professionally embarrassed.
I think she is saying that it remains a SSS, as FWS doesn't apply to the 1992 workplace regs and in any case FWS is not very clear about whether uncertified TiMs can enter a female SSS. But this seems to be to be back in Alice in Wonderland territory.