With that being said, maybe forum staff concluded that moderators energy should be more focused at reports that affect members (and therefore forum) more, which are of those recently written posts instead spending a lot of their time going through thousands of reports each month that affect forum members very little, if anything.
Yeah, and also some moderators came to the conclusion that they now spend less time on the forum, because the number of reports has drastically decreased, and they have nothing to do.
I'm sure that many moderators are not at all averse to processing old reports and getting rid of various garbage. Now reporting on this forum is not associated with finding low-quality posts, but with discussions about finding meaning.