I’ve been thinking about the Wish Realm as a concept, and I’m thinking that, perhaps, there are indeed a lot of alternate forms of reality. These of course, include the Victorian world (an alternate form of one of our eras). I’m thinking that perhaps Hyperion Heights exists in one such of these worlds. That’s how its 2017 there, that explains why they can’t get to Storybrooke (if its in another world).
But, of course a nice, logical solution to a problem the writers have created is going to have an awful and inelegant solution. It will be 2017 in HH because it is. With no explanation.