I'm teetering on the brink of 'to be fair to Big Sondie....' but here goes:
It appears from the judgement that SP's team acknowledged that when SP mentioned women's prisons, she was referring to the Bryson case:
630..There was an admitted fact that “C referred to the “women’s prison incident”, that is the Isla Bryson/Adam Graham case.” It is taken from the claimant’s pleadings, at paragraph 13 of the Response Table which the admitted fact cross references. [my emphasis]
So when it came to deciding what happened in the CR, the judge relied on this admission to decide that although SP was entitled to her GC beliefs, she was not allowed to express them in an offensive way, and referring to a trans rapist was deemed 'offensive'.
I agree that anything she said along the lines of 'You should not be in here' would be offensive to DrU. Would phrasing it differently - e.g. not referring to trans IDing men in women's prisons - have been considered by that judge as an acceptable expression of her beliefs? who knows.
And when SP said she wasn't referring to Bryson, the judge simply didn't believe her:
630 ...The second aspect was her evidence that when referring to “the prisons incident” during the Christmas Eve incident she was not aware that that involved a rapist, as a broad summary of her evidence. ..
that evidence seeking to distance herself from the remark which related to a rapist was we considered not credible.
This was one of the examples given by the judge for doubting SP's overall credibility. Obviously, from our point of view, we're shouting 'AND WHAT ABOUT DrU CLAIMING TO BE A BIOLOGICAL WOMAN?!' at the screen, but 'in fairness to Big Sond', he saw some things in SP's evidence that caused him to doubt it, e.g. the reference to Bryson was admitted by her team, but then denied by SP in giving her evidence.