WHY are people hating on new south park fans?

"Old fans" love to go around hating on new fans, isn´t that sad? The fandom would die without new fans, just like any other fandom. And don´t get me started on those who hate on cosplayers or fan artists because "the characters would make fun of them" like? who cares? let people have fun. I personally love south park fanart and cosplays:3