So, what's with all those "Nostalgia" posts?

Over the last two or three days the sub has gotten a huge amount of shitty "nostalgia" posts that everyone who visits the sub regularly has seen at least once or more before. Some of those posts literally have the title "some nostalgia for you". They aren't original and more than often they can easily devolve into a circlejerk of "back then everything was better" and "no, everything's better now".

To be honest, I got some bias because I generally dislike those posts but I can't be the only one who noticed a rise in low effort karma farming nostalgia shit.