This article misses quite a bit.
Podman has a full Docker compatible API, so you just have to enable it, and then set the DOCKER_HOST to point to its socket. From there docker compose should work as if you had Docker.
Podman also is currently working on "podman machine", which can spin up a Linux VM to run Podman on macOS and Windows. I think it's still in beta or something, but it seems to be working already.
There is also things like Podman Desktop[0] and Podman Desktop Companion[1] which attempt to bring an experience similar to Docker Desktop to Podman.