StoneWhisper

Yes, before running anything, you need to analyze the source. Still, I trust it: it works well, and as the Italian website indicates, you just need to check the linked .cmd file via the URL shortening to see exactly what it does. This should be done before downloading it with curl and before executing it as a .cmd file. The no-oobe solution also has the advantage of allowing the bypass of the entire OOBE phase.

I found an Italian website that offers this and other procedures. To automate the modification, it suggests pressing SHIFT+F10 and then using the built-in Windows curl command to download a simple cmd script: https://www.ilsoftware.it/focus/windows-11-con-account-local... The cmd file can be run with the no-oobe username option, allowing you to choose the name of the local user account to be created. I hope this is helpful.