There's nothing wrong with someone close voting a question they think should be closed - for whichever reason. Only diamond moderators can actually force close a question with a single vote, so if the rest of the community doesn't agree with the close vote, the question won't get closed.
So, unless there are dozens of questions suddenly getting closed for little valid reason, I don't think this is a concern. Only three questions have been closed in the last 12 hours, five in the last 24.
I will be honest. There are a lot of questions that get asked on this site that I think should be closed and are not. Sometimes I think that's because people don't think about casting that first close vote. If someone's willing to push questions into the close queue where people can look at them and think
Oh, this question might be close-worthy, what do I think about it?
That's a good thing. More questions closed means more questions (hopefully) asked on meta about why a question was closed and whether it was justified. Without these discussions, we will never actually have a record of the scope for this site. Instead, it will be left as a nebulous concept that only the regular users can really explain, if then.
So, if you see a question with close votes,
Think critically about whether you agree with the votes to close or not. This means read the question and see if it has sufficient detail, a clear question and goal, it focuses on an Interpersonal Skills concern. Don't consider the user who asked it, how new/high rep they are, how much help it seems like they need, etc.
- If you agree, cast your own close vote.
- If you disagree, don't. If you're in the review queue, feel free to vote "leave open".
If a question is closed and you either don't understand why or don't agree with it, ask about it on meta so that we can discuss it.
If you really disagree with the close vote, vote to reopen if you have that ability but please come ask about it on meta and explain why you think it should be reopened otherwise we'll just risk a tennis game of opening and closing the same question repeatedly and we'll eventually run out of close/open voters and that's not helping the site grow.
There are some things that really help a site define the scope that we still have not done. It's early in our timeline but we have so much traffic, it seems a bit late.
Help Center "How to Ask" page.
We really need to get some content for this page and soon. Discussing closed questions that are disputed will help us decide what is on topic here.
Custom close reasons.
These let us explain better to users why their question was closed and link them to help that will guide them in fixing the question. The generic close reasons don't really do this very well. But in order to have this help, we need to talk about it on meta.
This site has a lot of growing to do but we need our high reputation users to be as active and engaged on meta as they are on the main site so that we can all come to some semblance of consensus (that meets the Stack Exchange guidelines) for what is on topic here, what is "sufficient" detail for questions, what is "sufficient" explanation for answers, and any other concerns we may have.
Let's actually use meta to help this site improve!
As a note, I'd like to remind everyone that "leave the question open until the OP has time to fix it" is the exact opposite of what is supposed to happen. Questions get put "on hold" with the specific purpose of pausing the addition of answers until a time that the OP can clarify the question or add detail or fix what's wrong with it. A question that is only one line long should not be left open until the OP can fix it. If they edit their question to improve it, it will enter the reopen queue and if the community agrees it's improved, the question will get reopened (likely by the same people who voted to close it).