It's made up BS. Most of the conservatives using pepe avatars don't even know wtf fuentes is. I can confirm because I'm one of those people who wears a pepe the frog mask on forums. The left-wing and MSM hate that conservatives have this mask to anonymize themselves with and they're trying to peg them all to a white nationalist is an attempt to discredit and take down the entire group.
Well it's not going to work. I'm going to keep posting conservative things behind a pepe avatar. You can call me whatever you want. Say I'm a follower of fuentes, or hitler, or satan, or devour the souls of the innocent like cthulhu. I don't care. I'm still gonna wear my frog mask.