I would imagine there aren't too many electricians in Yeehaw, Minnesota, trained and qualified to do gigawatt data center installs. So they'll freight in contractors to do that work, and maybe temporarily employ a few locals for a month or two for auxiliary stuff.

More generally, this is the universal playbook when someone wants to dump some megaproject on a community that doesn't want it: This will create X jobs and inject $Y into the local economy. Can you name one case where this actually happened? It's usually very few additional permanent jobs and, particularly for public-works stuff, millions or even billions in extra debt to pay off. But don't worry, this next thing we're working on once we get the local council to issue a permit to bulldoze your forest park, that will bring in jobs, we promise.