Matthias, let me very explicitly address your points to make sure that you recognized that I did address them (as per your remark 5).
0: That is a misrepresentation of my point: before changes are implemented that affect all developers, some outreach effort to all developers should be done. I am grateful for your efforts to improve things, but a small group working in a way that what they are doing is easily obscured by the snow does not really constitute community involvement nor help ease the developer experience.
1: I don't know what you're basing this on. Things in Sage that affect the whole community in any noticeable way have mostly been discussed on sage-devel, with an exception perhaps with many of the things you have been doing. As noted in (0) and previously, on a PR does not constitute community involvement just because it happens in the public. It is too easy to miss when people are busy and in all of the PRs that appear. You have no basis to claim an improvement against discussions on trac tickets either.
2: This is a fallacy: I take an interest, but I don't always have the time to devote to this. We also have a specific forum for public discussions: sage-devel. Somethings do happen here, but not all, as illustrated by this issue.
3: You might think of them as such, but that doesn't mean other people do. Not only did nobody else raise an issue with this vote, we have had numerous votes in the past as a way to resolve such issues with a disagreement.
4: First, you could have put other options here. However, ultimately any other alternative was simply to keep it in place. I included other options that were proposed and one even received a vote.
5: They don't need to be acknowledged for the process to continue. Referees don't usually acknowledge someone in a game when they want a foul called either.
6: This is not true; somebody has the duty to implement it. Although it is not clear who should, but the initiator of the vote does implicitly have the burden of implementation. As such, I have done so (which now needs approval):
Kwankyu, just because there is no explicit legalese definition, a good rule of thumb that we have employed is things that (could) effect everyone should be mentioned here.
Best,
Travis