Thanks for that very well done audio demonstration! It’s good to get the “straight skinny” from someone who knows the real instrument. If you’re not a teacher, you certainly could be one, judging by the way you presented your subject.

I personally find the fret noise of the Yamaha SA guitars to be a bit annoying. But I’m sure not everyone feels that way. Luckily we have a choice among quite a number of decent guitar voices, although I believe Yamaha does tend to use SA voices in many of their styles.
Paul C.