I'm an academic in a UK Law School, and have some involvement in student misconduct proceedings. A few thoughts:
First, if a student(s) brings a formal complaint regarding the behaviour of another student in a class, we cannot just dismiss it out of hand - we have to investigate it. So I would be reluctant to put any weight on the mere fact that the university is conducting an investigation.
Second, having read the tweets from Abertay, I think it is problematic that they say both that press reports are 'inaccurate' and that they don't wish to comment on the particular case. I think if you're going to use the word 'inaccurate', you need to be REALLY clear as to where the inaccuracy lies.
Third, if I was handling this complaint, my main questions would relate to whether the student was conducting themselves in a way that was offensive or intimidating to others, in terms of calling people names, yelling at them, consistently speaking over them, making inflammatory remarks, etc. If there was evidence of this, I'd also want to hear about the behaviour of others in the room and of how the lecturer handled this situation. Trans issues elicit strongly held views, and if I were to include such discussions in my classroom, I'd think very carefully in advance about the strategies I'd use to facilitate a healthy but robust debate. That is, I wonder (especially given the suggestion the lecturer muted the student) whether this case reflects more on skills of the lecturer in setting the tone.
Finally, as someone with GC views, I agree with the observations about the degree to which cancel culture has impacted on academics, and especially female academics. Much as I would like to have the bravery of a Kathleen Stock, I am simply too scared to 'come out' publicly with my views, as I know that I would lose invitations, be deplatformed from conferences, etc, even though my research has nothing to do with gender or trans rights.