There is definitely some free-jazz that is too much for me as well. But, some of the incoherence is just chromaticism that purposely approaches or plays with our expectations for tension and release.

An incredible player is someone like Chris Potter on the sax ( https://www.youtube.com/watch?v=4Fvsz8KuD-g ), who has a truly virtuosic control on tension and release. In the video I linked, he (and everyone in the band too) plays with the ballad form over and over, never seeming to resolve perfectly, until they transform into a wild funk sound that is an ecstatic release that is also just wildly dance-able. The incoherence, even some of the screeching, that emerges is like the cows that are finally let out of the barn after a long winter and jumping for joy in the sun.