> open source doesn’t not imply the authors have any duty to also provide packaging and distribution as well
If the authors are using open source as a selling point and marketing relay for broad audiences, I think there is a moral obligation to.
For projects with little awareness, niche, or "just a hobby, won't be big and professional", yes sure, I would never think to have any opinion, nor bothering them.
Distribution is an orthogonal concern. The fact that many existing things are nicely distributed is a pleasant bonus, not a necessary condition.