Apparently this was supposed to be on Kid A where Idioteque ended up, before Radiohead decided on a last-minute change... now I love Idioteque dearly, but I think Kinetic would've served the album even better.
"Kinetic" is just one of those many great Kid A / Amnesiac session songs that never found a proper home. I found this old message board post from 2000 that lists what people thought might be the Kid A followup. Note that "Big Ideas" (now "Nude") shows up. http://www.atforumz.com/archive/index.php/t-19000.html
That's a ridiculous thing to say. Maybe some people love jazz but can't stand late Davis, or haven't got round to listening, or their definition of jazz is different from yours. There was at least 70 years worth of jazz prior to Bitches Brew, have you heard it all?