My good friend jazz pianist the late George Ziskind and I spoke about this often. He referred to what he called "the composer gene" that only a limited number of musicians have.
When I look at a jazz album and see all the tunes are originals by the leader, I quickly loose interest in hearing it. Of course there are a number of exceptions such as ,for example Horace, Cedar, Wayne, Bird, Golson and some others. Some standards, and or some of the fine tunes by the jazz musicians with the "composer gene" provides an incentive for me to want to give that album a listen.