Particularly when you're flashing the ISO you downloaded from MS to USB and it doesn't work unless you use MS's magic tool. Thus dropping you into the bootstrap paradox.
Especially because it gets partway through the install before failing to load NVMe drivers complaining there is no installation media to load them from.
It turns out it's faster to install Ubuntu and download one of MS's windows VM's and use that to download and flash a USB than actually install Windows 11.
Then you can reboot so that the system boots off of sysvinit instead and then purge systemd with apt-get remove --purge --auto-remove systemd. This also removes packages that depend on systemd.
Then you pin systemd packages to prevent apt from installing systemd or systemd-like packages in the future.
Of course, no worries. I seemed to recall there was something out there for this because I read some article a while back that was discussing the scope-creep in systemd, and the problems that result from it. I think I found this wiki originally at that time.