Sure, but those guys are all (sadly) long gone, and the parent comment said "don't", not "didn't".
It's definitely true that most jazz musicians can read passably, but my original point was that it's an aural tradition. no one learns to play jazz reading notes off a page. Whereas in western classical music, it's an essential skill.
https://www.amazon.com/Erroll-Garner-One-Hear-Read/dp/B00AZ4...