Given most country songs are "covers" - someone else wrote and produced it, the singer just provides the voice (a few even still play an instrument for what it'

Given most country songs are "covers" - someone else wrote and produced it, the singer just provides the voice (a few even still play an instrument for what it's worth) - I don't see anything particularly different here. I guess I do see diminishing returns in Randy Travis' voice particularly. I can already have "his voice" and anyone else's "cover" any song. If you replaced the famous name with someone with a (subjectively) equal or better voice, then what? It feels like a rabbit hole of disintermediation between the song and vocal qualities and a real life person. If it's a a distinction without a difference, when did it ever matter that it was Randy Travis?