The linked gist seems to mostly be describing a misalignment between the expectations of the project owners and its users. I don't know the context, but it seems to have been written in frustration. It does articulate a set of expectations, but it is written in a defensive and exasperated tone.
If I found myself in a situation like that today, I would write a CONTRIBUTING.md file in the project root that describes my expectations (eg. PRs are / are not welcome, decisions about the project are made in X fashion, etc.) in a dispassionate way. If users expressed expectations that were misaligned with my intentions, I would simply point them to CONTRIBUTING.md and close off the discussion. I would try to take this step long before I had the level of frustration that is expressed in the gist.
I don't say this to criticize the linked post; I've only recently come to this understanding. But it seems like a healthier approach than to let frustration and resentment grow over time.