For what it’s worth, `start ms-cxh: localonly` after Shift+F10 during installation still works. Another way is to prepare a custom installation image. Of course, such workarounds shouldn’t be needed, so this is nevertheless a good fight.
I use Rufus boot to change downloaded ISOs to allow local accounts and bypass other nonsense. Like TPM and other crap. This allows me to use 11 on my PC I built in 2015.