Thanks - you're right. I just have never known whether to quadlet or not to quadlet, as the centre of gravity seems to be moving that way, but that might be a redhat-first feature.
The quadlet feature is just part of podman, which consists of no more than a generator for systemd. Generators are just an executable "hook" that spits out unit files according to systemd-defined paths. Any systemd system with podman will be equivalent to any other for the respective versions of each. There is nothing distro-specific about it, especially since podman can be a single multicall binary like busybox to provide it to a system that has systemd and nothing else.