I had to do something very basic recently which was to make my single-channel microphone 'mono' in the sense that it was present in both ears. This involved a lot of googling and command line action. I don't mind that in principal but I can't say I learned anything. I don't remember what I ran, why I chose the option I did to make it work…and I know when I have to do it again it will be arcane again. If Linux is ever going to be truly mass market and bridge the uncanny valley of weird little use cases between pro users and Facebook grandmas, this sort of thing needs to be more readily available in settings applets. Call me a normie but there it is.