I've never watched pewdiepie but I assume his audience is too young to be on reddit or 4chan or to having been rejected by women for so long as to consider themselves to be celibates.
Firefox OS was a terrible idea. Gecko is horribly slow as it is, and they put it on low-end, under-powered mobile phones. As it was expected, using it for a few minutes made you want to hang yourself. I know they met with bosses from telecos, I wonder what faces they made when they showed them how the mobile behaved.