I think the point being made is perfectly valid, though not necessarily universal. Musical taste is subjective. So much of audio is also subjective. And we don't have to have high fidelity to enjoy music.
Better fidelity sometimes gives me a closer relationship to a piece of music and often a better understanding of what is going on in a recording. With a good system I can hear the doubling and trebling of parts in a Renaissance music recording, for example, more clearly than through a single Bluetooth speaker. But I can still do the relevant dance if the reproduction doesn't make those parts clear. Will the improved reproduction suddenly make you a fan of Renaissance music if you didn't like it at all before? Really?
Isn't thinking such a thing just another example of expecting too much, or expecting magic, from audio equipment? Audio science goes way beyond measuring SINAD. It has to involve the process of hearing and understanding sound, so this area is hardly beyond bounds.