Tesla's factories have a ton of automation, but the factory here in Austin employs 22K+ people. Automation will no doubt increase, but that just means the value humans provide is higher level and managing, maintaining, and redesigning the assembly lines as market demands and product categories shift. Datacenters are nothing like factories.

Meanwhile, if it ever gets to the point that automation has truly replaced humans, why not have the machines here at home? There's no good argument against it and plenty of arguments for it.