It was a bad example as it's quite easy to detect cloud operator endpoints (their internet gateway). Try it sometime and see how many web site make you go through some captcha maze.
They would most likely use residential proxy/vpns that show your traffic coming out of a regular household ISP. They can be purchased for cheap.
A VPN is just a tunnel to a server somewhere (in this case, an Azure VM) so anywhere you can rent/run a server is a place that you can setup a VPN and pass all your traffic through.
Reason I ask is because there are few people I follow that use VPNs but their location is accurate on X.
Also, X also shows where you downloaded the app from, e.g. [Country] App Store, so that one might be a bit more difficult to get around.