User blog comment:Biggreybear/Things that bugged me once I had noticed them.../@comment-899316-20120610025008/@comment-899316-20120610184849

Well, yeah, there are answers for all of these things. This was all just for comedic effect. The Collector point, however, is still valid. The codex says not only that some Collectors are still around, but that "Collector swarms" have been used by the Reapers on Palaven.