Non-useful distros become unmaintained, that's how things are, regardless of service supervision. If you want a maintained non-systemd distro, try Alpine Linux.

Void is pretty well maintained, as of lately, and did not give me any headaches for last several years. That's a lot for a bleeding-edge rolling-release distro. Yes, its my daily driver.

(Alpine is great, but I did not try it as a daily driver, it's sort of not intended for that, it seems.)