Getting back to the original issue:
Part of the problem is fundamental to communications n general -- nuance is difficult to convey, and the crew at DP like to take things literally, especially if they cast DMOZ in a poor light.
Within this ofrum we've had various "rules", such as thr 30 day rule, the six month rule (or was it three months?), the 14 day rule, etc. Each is/was specific and applied to a particular activity -- yet each of these rules has been misiinterpreted (intentially or otherwise) by many, many people (usually in a manner that benefits the one doing the misinterpretation.
Is it conceivable that some editor, or meta, in an effort to be helpful suggested that few sites are listable in the first "X" months of their existance? Sure, because few sites are listable when launched -- particularly if they are non-business sites.
Is it conceivable that some editor, or meta, in an effort to be helpful suggested to some anxious webmaster that they ought to spend the first/next six months working on content rather than worrying about when or if they were going to be listed? Why not? It is great advice.
But, as has been said earier, there is no formal rule requiring that sites be a certian age before being suggested. We do, however, insist that sites be complete in the sense that there are no "under construction" or "coming soon" notices. And, yes, we do recognize that in terms of development or growth no website is ever "complete". There goes that nuance again!