In a way - yes, but apart from the fact it depends on where you draw a line between copying and just "playing in the idiom", if you (not you, Paul, but those who make statements like the one you refer to) exclude from the start all those routes into jazz that will help to EASE people into jazz in an entertaining way (what's wrong about entertainment anyway?) and to provide them with an incentive to venture further into other RELATED fields of jazz step by step and if you insist instead on wagging your finger at your target audience and lecturing them about what they are supposed to like then you should not be too surprised if they turn their backs on you. After all, given the wide field of music and the wide field of tastes, music (including jazz) is a buyer's market, not a seller's market.
Okay, but if all (or the vast majority if what exists) is entertainment or recreation, there's no real creativity and music (no matter what the genre) will die. That even goes imo if there's a large audience. Eventually, that large audience will consist entirely of morons and the music won't matter (except to morons).
You may disagree. If so. we can leave it at that. No use arguing about what we can't agree on.