The status was actually created when Stormblood was about to release. So it checks out even if we have Stormblood level players (which I don't really agree with, the baseline back then was more like 500-600k while currently that stat is above 800k).

Even before Stormblood, we had certain worlds that were overly congested like Balmung and probably Gilgamesh, and they were a big reason for the creation of the status.