I don't disagree. I just don't think this can be enforced in any way. Community defines itself. We've got 75042 people who can cast close votes. Requiring multiple votes helps, but you can't make that many people behave the same way with the same values.
If you don't, there's no real harm in leaving bad questions open until there is someone else in the community willing to help out.
I find myself looking at closed questions wanting to help but unable to too many times.