From the start of the judgement (paras 2 and 3):
[2] These proceedings have generated some publicity. As this Judgement may be read by those who are not legally trained, it may be necessary to make two initial points. First, it only addresses the defender’s preliminary argument that the action should be dismissed without evidence being led. Second, a court may only sustain such an argument if an action is bound to fail, even assuming all the averments in a pursuer’s written pleadings are true (see e.g. Jamieson v Jamieson (1952) SC (HL) 44 at pp50 and 63).
[3] That assumption explains why I must not address two further issues which are clearly important to the pursuer - first, the truth of what happened during two courses which she undertook at the University and, second, the validity of certain gender critical beliefs which she expressed during them.
So it seems that the Sheriff agreed that: a) the university (defender)'s preliminary argument prevailed, b) that Lisa's action was bound to fail, and that c) therefore her evidence about the events themselves wasn't assessed at all because, even assuming that it was true, it wouldn't have made any difference to the outcome.