Yes, that's exactly it.
It's one thing to be born with a voice, but it's an entirely different thing to be born with such "feel" for an instrument. .. especially an instrument as complex as guitar (and at such a young age).
And using the instrument as part of his body/soul to express far better than a voice (or vocals) can ever do. Music is at a far deeper level than vocals.. That's why you have world-renowned instrumentals -- you don't ever see records put out with just vocals an no music... because it's just silly.
What the boy can do on that guitar is far more impressive.
Music >>>>>>>>>>>>>>>>>>>>>>>> vocals