Seems pretty unreliable. At least I know a recent Google Play Console reviewer was located at the Google office in Lisbon. I wouldn't be surprised if Apple used reviewers outside Cupertino.
Ye we've had apps rejected because they hit our IP geoblock, and the logs would always indicate they were testing via an Irish mobile network.
We specifically allow-listed Apple's /8 range, but they don't always use the corporate VPN.
Does "tried" imply they weren't successful?
The linked post mentions they getting caught after a while.