I'll play.
I'm a saxophonist; both Classically and Jazz trained.
He is a very good technician. He has a good tone.
Yet I cannot abide listening to him... and really any "soft" Jazz any longer. (Back in my junior high and early high school years when I was still learning, I used to listen to him, Sanborn, Spyro Gyra...) There is a significant difference in a musician that excells at just making good Pop bubblegum and playing chromatics, circular breathing and whatever other tricks vs a real artist capable of telling a story and making you think.
Perhaps comparing Mozart to Shostakovich might make sense? Or how about comparing a Keene painting to Picasso, Klee, or Klimt?
But as I learned more, it was Bop musicians and those that followed that opened my eyes. I'd take Dexter and Trane, Miles... so many others... any day over the bubblegum pop artists.
There is meaning in their music, in their improvisation.
Kenny G, perhaps unfortunately, is just another Yanni. And he's laughing all the way to the bank, too.
*shrugs