I think this is another baby/bathwater situation, where a bunch of fairly privileged people being absolute bellends are making it really, really difficult for other people to raise legit issues of inclusion, and where subsequent discussions on this will lead to people unfairly dismissing it as "snowflakism" rather than addressing real problems.
Racism, sexism, abelism, homophobia, etc, are all issues in academia. Sessions in unconscious bias, led by a good tutor, and without the whiff of re-education, can be absolutely fantastic, eye-opening tools.
But this does look like it's been really misapplied, by a group of absolute melts, either because they are just narcissistic bellends, or - it looks more likely - so that they can cash in and get their money back.
On the specifics, I bow to no-one in my defence of any women to deal with having an abortion however she wants to, but in this case it seems like the student was approaching the art tutor as some kind of therapist, whereas the tutor was acting as, well, an art tutor. And I think the art tutor, from the available evidence, did the student a huge favour. If you can't cope with a private discussion with your tutor about your proposed performance art piece dealing with your abortion, then you are in now way ready to deal with the consequences of putting that art piece before an unfeeling public, who will not hold back with their opinions and have no duty of care towards you.
There's one ~ism that is noticeably absent from the students' discussion, and that's classism. They are fucking performance art students at a fucking conservatoire in fucking Glasgow. If they don't notice their privilege relative to a decent chunk of other Glaswegians, then they need to give their heads a wobble.