Was it ever true? I applied to universities in the 90s and throughout secondary, my parents were obsessed with me joining clubs, sports teams, DofE so that I'd "have something to put on my UCAS form to show that you're a well-rounded applicant". It still seems to be a popular belief on here that having grade A piano (for eg) will enhance your application.
I get that courses such as medicine, nursing etc need relevant work experience. But the other stuff? Is it/was it ever important?