This is a (motivated?) misreading of the judgement, which was perfectly sensible, and nothing to do with gender-woo or messing around with language.
At the original trial, victim said that she woke up with the defendant's penis in her vagina. The defence case was that she was mistaken about that. The trial judge said "It is extremely unlikely that a woman would be mistaken about that feeling" and found the defendant guilty.
At appeal, the appeal judge found that the trial judge's very broad statement was not justified by the evidence - there had been no expert evidence on the physiology / psychology / etc. that would be necessary to make such a wide statement. Since the judge's ruling relied on this general statement, the verdict was therefore set aside.
The supreme court's judgement was that the judge was really only making a claim about the victim - that she would have been very unlikely to be mistaken. And that therefore the lack of expert testimony didn't matter. It was "unfortunate" only that the original trial judge said "a woman" (generalization) rather than "the victim" (specific). Quote from the appeal ruling: "it is clear that the impugned statement, while perhaps unfortunately worded, was in fact not a generalization at all, but a specific articulation of the judge’s response to a theory advocated by the defence."