I'm pretty sure they're doing it because the voices inside their self-diagnosed schizophrenic heads is telling them to raid themselves and pretend to be a 4channer
it's probably reddit trying to make 4chan look bad
only reddit would be that obnoxious and want to victimize themselves. 4chan isn't organized enough to pull off something like this.
then again, stuff like this is out there that makes me think it's both of them trying (AND FAILING!!!) to make it seem like it's one website or the other
idk what you guys think tumblr is but the "extremists" would never do anything like this, if they were extremists they would be extremely against this. tumblr is usually a personal website, personal enough that people regularly post selfies. people on reddit and 4chan do stupid bullstuff like this because they are consisted of edgy 15 year-olds who dont have to worry about their personal identity being brought into it.