Is there a way to disable the Windows 11 Upgrade offer from the Autounattend.xml on a fresh Windows 10 install?

I have a Windows 10 USB that I use to automate Windows installations, and I'd love to be able to disable the Windows 11 Upgrade offer without having to do the really bad workarounds like using GPO (whether local or Active Directory) of locking the system(s) to a specific version, or completely disabling Windows Updates. Is there any way to do what I'm trying to do, or even as a first-run option? Or am I stuck with 2 crappy options that will probably bite me in the rear-end later?

Question by wb6vpm on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.