[homonculus1]

Which is awful and anti-intuitive--far worse than merely non-discoverable. It looks like a familiar control system that a hardware synth would have, but it's actually just a skin on a vertical slider: so it not only forces you to learn a different interaction anyway, but on top of that it lies to you about what it's doing!

Skeuomorphism worshippers have a lot of nerve to complain about abstract GUI philosophies when their own cult hasn't eradicated these design atrocities. Gosh, it sure looks pretty though...

[oscii]

I think you may have forgotten to add "imho", otherwise the message looks like its telling an indisputable truth. Audio professionals don't complain about skeuomorphism and philosophies and certainly there're no worshippers, as nobody cares about the new fancy names of mainstream visual styles (btw non-skeuomorphic knobs are quite common, e.g. Ableton).

From my own experience, knobs are far superior to sliders in audio applications, as all the adjustments are typically guided by hearing, and sliders' values can jump if you click in a wrong place. This just disturbs the flow. Most of the work with audio software UI is fine tuning parameters, often by a few percent, so relativistic nature of click-drag is perfect for this. Sure, there're relativistic sliders, but they feel rather unintuitive.