As a developer, it is interesting (and useful!) to see what sorts of games are generally popular. Thus, a sort that is based off only concurrent players similar to Rolimon’s would be helpful. Although the popular sort can still be accessed if you change the discover page URL manually, the sorting is no longer based solely on concurrent players.
I can understand removing the sort for the general playerbase if discovery via the popular sort page wasn’t great, but it’s been a useful tool for me personally. Thus, it’d be nice if official support for such a feature remained, even if it were somewhat hidden.