1) Reiterate my contention that this is a solution is search of problem. Still it looks like it is going forward, so see below.
2) "... engaging in behavior that may bring the PostgreSQL project into disrepute, ..." This to me is overly broad and pulls in actions that may happen outside the community. Those if they are actually an issue should be handled where they occur not here.
This is good point. There are those who would think that one has performed an action that brings the project into disrepute and a similar sized bias that suggests that in fact that isn't the case. This based on the CoC would be judged by the CoC committee.
It is my hope that PostgreSQL.Org -Core chooses members for that committee that are exceedingly diverse otherwise it is just an echo chamber for a single ideology and that will destroy this community.
If I may suggest: The committee should be international as well and include people from around the world. The last thing we want is for it to be dominated by people from one particular cultural viewpoint.
It will be. This is the PostgreSQL *global* development group and project, after all. Yes, there is definitely a slant in the project in general towards the US side, as is true in many other such projects, but in general we have decent coverage of other cultures and countries as well. We can't cover them all on the committee (that would make for a gicantic committee), but we can cover it with people who are used to communicating and working with people from other areas as well, which makes for a better understanding.
It won't be perfect in the first attempt, of course, but that one is covered.