Well they are also building 2 hotel towers, an expansive gondola system, 2 roller coasters, another trackless dark ride and the largest, most detailed land in theme park history. Combine that with Universal building 2 roller coasters and a new park. Then add in the other large construction projects in the Orlando metro area like the new hotel at DPAC, 2 high rise buildings in downtown Orlando, and the massive I-4 redo, the pool of construction resources are definitely stretched thin.
I have no info on the Jim Hill comment, but I do know that it is a major issue getting folks to work the mines in West Virginia. The latest data says that 25% of West Virginians have issues with opioid addiction.