Motivated by the review I've just seen of this:
The question probably is a NARQ/Not Constructive but its also valuable enough that it's been protected, with massive upvote/viewership figures, as have at least one of its answers. Its probably not the best one to use as the basis for this question (as its clearly closable), but the overall point stands.
Should these old posts that are massively upvoted (and with answers that are also massively upvoted), but not necessarily currently conforming questions be closable? And, by extension, what is the process to query whether then should be preserved for posterity?
A few of these have appeared for review lately.