I have recently acquired moderator privileges. Academia is the first SE site where I do so, so I was curious to see what they are like.
One thing that struck me is how quickly some questions get deleted. For example, this question (only visible with moderator privileges) was asked Nov 27 at 22:50 and deleted Nov 28 at 13:36, e.g. less than 15 hours later. This question was even deleted within an hour. The instructions in Access to moderator tools state that You must wait for a question to be closed for 2 days before you can vote for deletion.
From previous experience elsewhere on the SE network, a user asking a question gets no notification if the question is deleted, and is unable to view the question or the comments. They will simply get error 404. With such a quick deletion, it's quite possible that the OP never got the chance to read the feedback and learn how to ask better questions.
Would it be wise to wait a little longer before deleting questions? Personally, I think even 2 days is a bit quick. Closing is clear enough to signal "this is off-topic". Does it really hurt to leave the question for at least a week to give the OP opportunity to read and consider the feedback?