Oh for the love of... have you even read Infinite Macabre?!
THAT IS LITERALLY THE ASSUMPTION!
Mages, Changelings, vampires, werewolves, hunters, Sin-Eaters, Prometheans (Promethei?), psychics, and everyone else ALL operate in the open. Changelings aren't hidden anymore. They, in fact, are trying to find the world where the Gentry live (yes, the Gentry are magic aliens in Infinite Macabre).
So, tell me again how everyone is hiding in the universe that defaults to "it's all exposed", which I quoted directly from the book earlier. -_-
well yes, but the Gentry are still a thing, and they can still kidnap people near unopposed, there wouldn't be any Changelings otherwise. just because everyone and their grandmother now know that the supernatural is real, and that everyone
can operate out in the open, doesn't mean that absolutely everyone
does. Changelings
can walk around with their true form showing because they won't get hunted down by crazed mobs (well, they
might, in an area controlled by Hunters), but that doesn't mean that they will, because then they're walking around going "Hey! my old keeper! come and get me, I'm right here!". if the gentry can grab you once, when everyone in the universe knows about them, then they can sure as hell grab you again when you advertise where you are.
Hunters are also still a thing, and are still going around murdering anything 'inhuman'. they aren't going to do this completely openly, because at least some (probably most) areas of space are going to have laws against that kind of thing. and in the areas where they
can operate openly, the other super-naturals
can't.
Now open this up to Demons and the GM. some areas of space are going to be controlled by the GM, acting as a friendly alien intelligence benevolently guiding a planet toward the future, while demons do what they normally do. just having complete control of a given society isn't going to be enough to stamp demons out, as even with the near compete control it
already has, it still can't stop them from falling in Canon. then you have other areas of space, where the GM has little to no control, and you have rebel groups who believe that the GM is an amoral monster, which they then wage interstellar war with.
tl;dr: even if everyone can be out in the open in certain places, they can't do that everywhere, and would have reasons not to act openly even in places where they can.