Somebody asked a question yesterday on Arqade, asking us to list all the possible commendation dialogues in Overwatch. I felt that, especially given that we were being asked to provide a list, the question was too broad. I wrote a tailored close vote reason to specifically express my concern for the question being a "list request" and "too broad", and within a short time, other users added their votes and closed the question.
I also believed that this question showed no research effort, so I downvoted, and posted another comment to explain that I was downvoting because they showed no research effort.
Eventually a moderator came upon the question. They commented to tell me that no research effort is not a close reason, and manually reversed the already-completed voting, to reopen the question.
Only after pointing out that this was my downvote reason, not the close reason, did the mod argue that in their opinion this question was not too broad.
At the end of the day, I feel that the said question is too broad. At least 4 other users have thought so, and I'm willing to wager that many more would agree, as the question was very quick to close. I am a bit confused, and perhaps concerned, that a moderator would so hastily override a community decision.
In this case, I do not even know if the moderator has overstepped their bounds, or if their opinion is actually the law of the site. In this case, I have even lost my ability to vote against the question, but this does not appear to be intentional (at least), so I would rather not concern it in regards to the question.
Does Stack Exchange promote the discretion for moderators to override a hard-written close vote? And if it does not, in what context does it allow the networked sites to permit the internal moderators to do so?
I am not looking for a technical answer, given that past observation implies they can do it whenever they want. I am asking for the policy reason for when a moderator can legitimately override a community decision such as a close vote.