The article doesn't even gesture at the reason why West Coast is disfavored by some: it's the white flavor. A lot of people feel that the White clique of West Coast jazz capitalized on the popularity of the genre without really contributing much to it. It was the safe, commercial style at the time.

Note that this isn't my personal take. I love Art Pepper. I can tolerate some Brubeck. But I admit there was plenty of slop in the record stores, too.

Gioia even touches on this in some of his writing. One factor that's often forgotten is that Black musicians often couldn't fully capitalize on their own music, or compete effectively, because of Jim Crow. There was a lot of resentment as a result.

> A lot of people feel that the White clique of West Coast jazz capitalized on the popularity of the genre without really contributing much to it.

Meanwhile:

> The nonet recorded 12 tracks for Capitol during three sessions over nearly a year and a half. [Miles] Davis, Lee Konitz, Gerry Mulligan, and Bill Barber were the only musicians who played on all three sessions […]

* https://en.wikipedia.org/wiki/Birth_of_the_Cool#Recording

Mulligan also has multiple writing credits.

Glad you pointed this out… kinda hilarious someone looks at these musicians, their output, and their fans and thinks that “being from the west coast” is the primary factor here.

This happens pretty frequently in music.