I think most of the people in this thread are salty because they like capeshit and feel targeted.
Normies, especially normie girls, are a fucking plague on the community. Normie guys just fetishize the shit out of cosplayers or make fun of that kind of thing, and let's not lie to ourselves, most 'geek' boys do the same thing as far as fetishizing goes.
I think the issue is mostly that the overall 'nerd culture' has been associated strongly with a male presence save for a handful of beautiful, busty women who are able to adlib. So, when a cute normie girl comes in wearing a Marvel tee, it doesn't matter how much work you put into your cosplay or the amount of money you spent for your coord.
Also, the degredation and simplification of the craft. Normie girls are so quick to say cosplay is as easy as going to JoAnn or Hobby Lobby and buying felt and a sewing machine, or that a shitty Hot Topic dress passes as lolita, and a lot of the time they get away with it while people with a genuine commitment and passion get overlooked for being know it alls or prudes.