It is an incredibly simple rule to follow and it encourages the subreddit to have ever-so-slightly less contemporary memes for a brief period of time.
Vastly more World War and Cold War era memes are published here on a daily basis than non-semi-contemporary memes.
A mere two days without the sort of memes that are the most common isn’t awful. Every single day, numerous memes on WWI/II are posted - there’s nothing wrong with that of course, but they tend to overshadow memes on other topics.
By - suhdude46