Universities are not vocational institutes, they are educational and have always offered subjects that are not directly vocational, but that is relative. Some of the most improbable degrees can provide someone with a career and the careers that the most dedicated vocational graduate gets may end up being something entirely different.
The creative arts - I would add, the humanities should emphatically exist at university, you do not know where this may take some one.
As I said DD did a degree in acting, but learnt enough to not want to act as a profession, but her degree, plus secretarial skills got her into the BBC, she was then in right at the start writing content for the earliest media websites. She spent 20 years working in various aspects the media.
She then did an OU degree in STEM subjects. She is just about to start her 3rd new job since making the change from media to technical management. The USP that has got her each job has been her drama training and media background. What is more, when ever she has decided to move on, she has been offered a new job within weeks, often several.
My concern is not about excluding subjects from universities, but I strongly believe that we should have far more routes into every subject, so that if anyone wants to do something and is willing to put the work in they can get there.
Personally I think this consatnt talk of lack of social mobility is bunkum. My grandfathers started life as London dockers and Northern Ireland flax dressers and were highly socially mobile. My FiL worked on the assembly line at Vauxhall. DH was moving up in the world when he passed the 11+ at 10 and then went on to university.
My grandparents, no matter how low in the social scale they started, when I knew them had classic middle-income life styles, owning their own houses, culturally educated.