"Hey, at least have the courage and in integrity to tell them directly how to run their project. On the mailing list. Not here."

Option A: Discuss shortcomings of a project that its members don't intend to change on Hacker News like a lot of other things. Maybe learn something.

Option B: Send email about those to the project's official mailing list. Spend some amount of time in a flame war that teaches nobody anything.

Although you want B, I think most should just stick with A. Better time/reward ratio.