I find it disingenuous to talk about construction jobs as being "generated". Construction jobs are contracts. Building a datacenter might put 3000 people under contract temporarily but it doesn't "generate" jobs. Once the contract is complete those contractors they're no longer paid by the builder.

The word "generated" is used to make it sound like the project opened up 3000 new permanent jobs for people. Those contractors were employed before the contract and will be employed on another contract at some later point. There's no net gain of jobs in the long run. The contractors won't even necessarily be local. The builder isn't going to call up Bob's AC repair from Collierville to do the specialized datacenter HVAC. They'll fly in a company specialized in that task who will fly home at the end of the contract.

The companies scrambling to build datacenters take advantage of that linguistic ambiguity and then the local politicians end up doing the same. They give these companies sweetheart tax/zoning incentives, proclaim contractors as "generated jobs", and then leave the locals with all of the negative externalities and none of the revenue.