When did this come up?
I know tons of people who run Windows unactivated. The key difference is there's a watermark. Otherwise, it seems to work fine.
The official solution for non-technical users is to buy a PC with Windows preinstalled.
[1] https://learn.microsoft.com/en-us/windows-hardware/manufactu...
That being said, I installed Windows 10 on Framework 12 by mistake and SHIFT+F10, "explorer", right-click on INF and "Install" also worked.
But on latest Windows 11 installer such witchery is not needed.
In contrast, most desktop oriented Linux distributions have a simpler installer and provide at least enough hardware support to leave you at a functional desktop. (There may be issues with more esoteric hardware, but chances are that hardware wouldn't work under Windows until vendor supplied drivers are installed anyhow.)
I just install and type in the key. no network.
I use it for VMs no network necessary.