Good observation anon. Chaos is a real problem when direct oral transmission from one who knows how to give a specific impression, based upon what each individual student needs, is key to proper development of the human organism.
Thus the reason for mystery schools, which exist in a contemporary form today.
Time-sort algorithm. The early numbers are probably replacing deleted posts and the database automatically puts new posts in the deleted positions. If that is the case, then surely Q knows how the content management system works and did that intentionally.
That said, the sequence does look like a count of sorts as well. Signal to Q 'sleeper cells'?