I agree, as I said Disney clearly are not beholden to maintaining any kind of thematic cohesion when it comes to this area of Epcot now so it doesn't really matter either way.Well, there's a random Wreck-it Ralph playground right now soon to be replaced by a random Toy Story theme (even though the "theme" is simply "a sign saying what the theme is").
If there is a Moana themed water feature, it's on the way to a Nemo themed aquarium.
Also, Future World is dead. Disney (or a corporate sponser) couldn't or didn't want to keep Communicore/Innoventions fresh, especially with how quickly all the cutting edge computer stuff became outdated. And so, that central plaza of Future World will become an extension of World Showcase. What's left of Future World will be that outer circle of pavilions that haven't been "updated".... yet.