> What I’ve found is that if you want it to work you’re stuck on Raspberry Pi OS, a bastardized Debian distro, anyway.

Ambian, Dietpi, and Alpine all support it, along with many other boards that are not just easier to find these days but also cheaper and sometimes more powerful than the Raspberry Pi.

https://www.armbian.com/download/?device_support=Supported

https://dietpi.com/#downloadinfo

https://alpinelinux.org/downloads/