getting a local account is simple.

Windows Pro > Work or School Account > Join a Domain instead > Set password & recovery questions

The one component here that is not present on most machines straight from the manufacturer is the presence of the Pro version. The home version of windows requires the account with increasingly limited alternatives.

As the author mentions in TFA, she's on the Arch staff as a package maintainer. I don't think there was a technical obstacle around the windows setup process.

https://archlinux.org/people/package-maintainers/#josie

Simple™. Easy™.