Well, if it is any consolation, it annoyed Corypheus far more than it did me. Do I have time to retract that promise?
I have two possible theories. One is that the Fade or a version of it does exist here but that there is a barrier that largely keeps us out. We can still connect to it imperfectly to use our magic but nothing more than that. The second is similar to your last suggestion - that we are still, in some way, connected to the Fade at home but the distance means we cannot use it as per normal.