I mean, it's not like Atticus hasn't been all over the NIN production notes for the last ... I don't know, ten years or so now? He's clearly been a very close collaborator on all Reznor projects for a long time and to officially name him a member doesn't mean he wasn't already adding a lot of his voice and influence to things. They specifically call it a departure from HM and their score work; people getting worried it'll be five Juno-style songs seem to not be paying attention to that.