Musicians know best how their instruments and music sound.
Musicians have a unique perspective, one that is not shared by those of us who enjoy their music.
Imagine how a violin must sound when the instrument is under your chin and your left ear is mere inches from the strings and bow. I guarantee you that is an audio perspective only the player knows.
And the sound of a live band on stage is very different than that of an audience member the band is playing to.
No, I think most musicians are rather bad at correctly identifying how their instrument sounds to listeners of their music, just as bad (I suspect) as you or I might be at identifying how it sounds to make that music.
I’ve spent more than half a century as a listener from afar.
That’s a lot of experience of a very different nature than the musicians who are making the music.