I'd say it's more likely that the delay was to spread out construction manpower, so they could open the rest of the land faster... likely because of course that Rise is/was having some difficulties that were causing delays.
So, Rise ride system issues take longer than they like + Blue Milk and Droid Depot could be ready sooner = Rise opens later, and let's move all these workers over to Smuggler's Run and get that open first.
My take anyway.