Well, since you asked...
It's not an opinion, it's a fact. It has been a fact for a couple of years now. There is an inordinate wait for most submissions.
In November, 2000, there were already numerous unreviewed listings a year old, as evidenced by this excerpt from the Official ODP newsletter [dmoz.org]:
"How does THAT impact the unreviewed for a category which has been piling up since November 9, 1999? Yes. There really ARE unreviewed from that date."
There are a few reasons for this, not the least of which is that many of the shorter-term "long-term" editors have a propensity for finding reasons to make rules which keep listings out rather than adding listings. This has puzzled me for quite some time now.
Both staff and shorter-term "long-term" editors have for some time found reasons to remove listings along with editors, which doesn't help much either, but that's for another post, I suppose.
The last I heard -- and granted, that was quite awhile back -- around 10% of all applicants were accepted. Back "in the day," there was talk of making the application clearer, as it was suspected that many intelligent and capable applicants simply misunderstood the questions, and the application was fairly unclear as to what was wanted from applicants.
Further, many of the true long-term editors have simply given up doing much of anything.
Well, again, perhaps this has changed, but the motive of a webmaster never used to be at issue. Why is it now? If a site has useful content, the guidelines, staff, and metas used to say to add it.
Wow. Is this now policy, or simply the way you handle things?
ROFL! Okay, this is simply funny. Unless you're talking about small categories or unemployed editors, both are doubtful. There were countless threads in the ODP forum encouraging people not to answer email from submitters. (And yes, I will admit that I was one of the major encouragers.)