No doubt, he knew right from wrong, but it seems that he just couldn't help being silly.
It best got put by some reviewer of some festival who described Coles' set by saying something like "warmed over third generation bebop is an acquired taste. I have not acquired it" That's it for me.
And really, no disrespect meant, the guy obviously did the work and paid at least some dues. There was so much other stuff happening at the time, even on Muse, so much other stuff. Even with Eddie Jefferson, Richie Cole did not really seem necessary, but he kept being there anyway, sorta like Ron Jeremy.