Although abstract may seem to be an easy word to describe, it's not. The definition can only be agreed on by the people using the word. I'm going to find jazz that I call abstract, and see if it fits your definition as well, and you can do likewise, and between all of us, we will know what we're talking about when we say "abstract jazz".
Grachan, calls this "New Africa", since I don't hear "Africa", it must be abstract. I don't hear Art Blakey's Africa with the talking drums, therefore it's not concrete, so it must be "abstract".
https://www.youtube.com/watch?v=-Xo0mzj-lg4The first cut is "Queen Tamam"; jazzy African Queen; "you go girl, strut your stuff"; somehow I can not picture an African Queen; therefore it's got to be "abstract"
This is definitely abstract because it's beyond my facility's to comprehend it as coherent jazz.
https://www.youtube.com/watch?v=SJRcWW0R44YWhile that's not a precise definition, it's good enough for me.
Enjoy the music.