I've undeleted the question tho I would leave it to the community to decide if it should be on hold.
That said, it's an unexceptional question, bordering on terrible, with exceptional answers. It kind of won the HNQ lottery and would probably have been forgotten if it had been closed.
Reopening the question was on the merits of the answer, not the question, which probably should have been edited/closed more quickly.
I may follow this up with its own, detailed meta question.