Even though nobody probably really knows what our troll-in-chief thinks, my best guess is, that his true agenda the long term devaluation of brofists, which have been given give an induly importance by some members in the past. This fits in very well with many similar former stunts like brofist betting, brofist retractions and so on.
The inflation of possible ratings means that the rating of a
singular post becomes more important as it can be rated much more accurately, whereas the sheer number of possible ratings ensures that ratings
overall become less important, disincentivizing degenerate posting behavior (brofist harvesting) to a certain degree. And thats bredy gud.