I have very limited experience with Podman and no experience with quadlets but I'm still curious. Are quadlets exclusive to Systemd?
I ask because I currently use Alpine Linux which uses OpenRC by default. It took a few days just to figure out how to get my HomeAssistant container to run without using a Docker Compose file. That's my only true experience with Podman so I don't actually know how dependant Podman is with Systemd.