A good point. If you're picking equipment on the basis of euphony or
"musicality," why do you need a reviewer to tell you what you like?

Because a good reviewer will tell you that. A good reviewer will say,
"This measured this way, but it sounded this other way to me. It
sounds brighter than the model X and less bright than the model Y, and
it has a particular thing going on in the upper midrange like model Z."
This lets you get some vague sort of sense about how it sounds, or at
least how it doesn't sound. It's nowhere near enough information to
pick equipment, but it should be enough to specifically rule out some
gear, and give you a short list of equipment to audition.

You're right, but I'm thinking in broader terms -- "euphony versus accuracy."
Telling the reader what something really (???) sounds like is certainly useful,
but I was much more interested in determining whether it was literally accurate,
something that wasn't of much interest to the editor, publisher, or readers of
Stereophile.

This wasn't the main reason, but it was _one_ reason I stopped reviewing.