I don't know what Pen and Paper Role-players are. That shows how old I am.
Back on topic. I'd imagine there will be some fandom that will be seen as unusual and people will hate on that. Each decade there was a fandom that was ridiculed. First it was Star Trek, then Star Wars, then Furries, then anime fans, and so on. It seems like bronies don't get as much hate as they used to. Maybe that's a sign that something else is holding the haters' attention or that people are more used to it, the fandom is a decade old anyway.