We are.

I just watched a short Youtube clip of Corey Henry on organ accompanying a preacher's sermon. It's fucking insane-- he's doing two-handed Liszt-inspired cadenzas while the preacher is freely changing keys. I've never heard anything like it.

Also, some weirdo did what appears to be an accurate scrolling transcription that accompanies the clip.

Now Youtube is recommending a bunch more clips with scrolling transcriptions of out-of-this-world jazz performers doing deviant things.

Here's one now of Benny Benack scat-singing, showing an unbelievable vocal range. Now he's yelling the name "Phil Woods" as he quotes a fragment from Phil Woods' solo on Billy Joel's "Just the Way You Are."

Youtube will keep suggesting these things at me literally until I have to go eat food to survive. And that's just the scrolling transcriptions of deviant jazz solos.

In short, author is so wrong he thinks he's right.

Edit: clarification