Linux admin still exists. Except that they are better paid than ever at cloud provider. What you're describing is more payroll flexibility than technical.
How is it not technical flexibility? No matter what talent you have on payroll, you can't spin up a whole datacenter's worth of machines in Europe in less than a day without a cloud provider.
And I mean less than a day from "I think we should operate in Europe" to "we are operating production workloads in Europe".
The whole point is that the closer you can get to "write code, run code", the faster you can launch and innovate.