Yes I agree. Honestly I think they are just wrong thinking that there's an entertainment district also planned beyond what you mentioned. My question has always been, "where?"
I mean, imagine that these two things were true:
1) The hub is a part of the theme park. It's never open or free. (A popular belief here on these forums.)
2) There's going to be an entertainment district. (As UOR mentioned during EU press.)
If those two things are true... You couldn't reasonably consider the hub to be the entertainment district... I mean, you'd have to pay $100 to get to the entrainment district? This is not what UOR was hinting at, clearly, so the only way to make those two things true is for this third thing to be true:
3) There's an entertainment district planned outside of the hub/theme park.
I don't think the above is true, but I think that's their line of thinking