That makes sense.
I do think you shoudl replace the stock answer with the one you just provided - because telling people, particularly people who are legit and NOT spammers (like me!), that (a) just about everyone who requests a status check is a spammer and (b) DMOZ isn't there for webmasters but for web users is like waving a red flag in front of our faces. The two rebuttals are:
a) as you just said, a large number of status-checkers are legitimate
b) web users would probably benefit from having legitimate new sites added quickly (or at all).
Alucard is certainly right that some areas are relatively free of spam and in fact I recently had a submission for a specialized site get in within a single week. (It was a site that I took over from someone else and falls outside my usual area of writing; its content is very unique.)
One other brief note - I once sent a few suggestions to an automaker, back in the early 1990s. (As I vaguely recall, two were making it possible for us to set preferences via the driver info center, which Chrysler started doing with the 1999 Grand Cherokee, and shutting off the engine while coasting, which only Opel does as far as I know). The reply put me off buying from them again for a while: it was a post-card saying that if my suggestions were any good, they'd have thought of them already! I wrote back to them to say they weren't making any friends with that post-card, and got back a three-page single-spaced typed letter, saying that if my suggestions were any good, they'd have thought of them already! I wonder if any editors find that to be a familiar thought? (Submissions are almost invariably spam, and editors always find the best sites anyway!)
I'd hope that somewhere within Dmoz are editors having a lively discussion about creative ways to rid the submission lists of spam while at the same time increasing response times; and that the people in those discussions aren't throwing around the same inaccurate stats and making blanket statements about submittors and status-checkers and such all being spammers.
Finally, for what it's worth, I take my hat off to the vast number of non-hostile, non-offensive, serious and hardworking editors donating their time.