At film school you actually get to make films so I'm not sure why they are making such a complaint, unless they never went to a decent film school?
While at film school I've written and directed my own short films, made a documentary, served as a director on a webseries drama and a director on a multi-camera show for online student television. I have also worked as a writer, vision mixer (in multi-camera production) and an editor and soon will be part of a crew on the film school's feature film. So film school has been incredibly useful and has made for a great insight into how the industry operates. This is how a good film school should operate, it should be a breeding ground for creative talent as well as a place that makes film and television show making students fit for purpose in such a competitive and intense industry, as well as arm students with professional friendships that should last for our entire careers. It should not just provide students with experience in directing, it has to encourage work experience on other student's sets, because that helps gain professional practice.