I have noticed a number of questions (for example this one), that are put on hold because of a possibility rather than the actuality. Typically, it is a question that is worded in a way that could result in some readers offering opinion-based answers. However, as in this example, the question has been online for a reasonable time, attracted a lot of interest and upvotes, and received, as the only answers, several fact-based answers citing references. At this point, it isn't likely that a bunch of readers will offer BS answers because these would likely be downvoted and it is obvious that any opinion-based answers would not add anything.
However, it is at this point that the question is put on hold. Granted, the wording of the question should be improved because there shouldn't be a bunch of bad examples floating around. However, putting it on hold at that point seems like overkill. Hold is part of the closure process and closure becomes automatic if the issue isn't remedied. It would be more undesirable to close a question of this nature than to leave a popular, well-answered question that contains undesirable wording in the question if the issue does not get fixed. So in this sense, putting such a question into the close queue may not be the best solution.
In a situation where the risk of undesirable answers is already negated by events, it seems like action less drastic than taking the question out of circulation would be better. For example, add a comment stating the issue and allowing some period (12 hr?), for the question to be edited to remedy it. If the issue isn't fixed in that time, then put it on hold.
One other thought: the people voting to close the question must do some tasks to accomplish that, including stating a reason. The moderator needs to consolidate this into a message explaining the cause of the hold. Getting into and out of the queue requires review time by a number of people. In most cases, a simple boilerplate edit would solve the problem, such as modifying a few words into a phrase like "can someone cite a reference that answers the question of...". It would be a simple task for any one of the voters or the moderator to just make the change. This would eliminate the requirement and time demands for that question to go through the hold process.