I have suspected this for a while, because in the review queue I often see questions people have voted to close as "not constructive" that several people have marked as "not a real question", and similar. And now I have proof.
There's a bandwagon effect going on: people are agreeing with existing close votes without thoroughly evaluating whether they're accurate.
This question that showed up in the review queue, clicking xspf file opens in broswer instead of vlc, is about setting up file associations under KDE:
so it clearly belongs on Super User. But in the close dialog I see:
There's no way two different people would think it belonged on Server Fault; clearly what happened is that the first person hit the wrong choice (they're adjacent) and the second followed. If I hadn't noticed this it would have been migrated to the wrong site.
Is this an important enough problem? If so, how can it be remedied?