its says "should" not "must"

And who's the judge? The examples you linked are all from monks of level 20+ and 5+ years of experience on this site. So there is good reason to trust them with the power to have a node reaped.

They restore contents when there are replies, when replies exist, when monks respond to the question being asked

What about all the monks that were typing up responses to the OP's node before they "deleted" it? It's just as uncool as unmarked edits.

In reply to Re^9: Sorry I wanted to delete it (board rules deleting nodes without replies editing nodes) by Anonymous Monk
in thread Spreadsheet::WriteExcel how to maintain row number by terrykhatri

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