No longer true. Podman nowadays ships with an optional daemon that serves a Docker-compatible interface, so you can use docker-compose directly if that's what you want.
See for example: https://www.redhat.com/sysadmin/podman-docker-compose
See for example: https://www.redhat.com/sysadmin/podman-docker-compose
Of course, there's no Swarm support, as evidenced by that very article:
> Caveats
> One known caveat is that Podman has not and will not implement the Swarm function. Therefore, if your Docker Compose instance uses Swarm, it will not work with Podman.
Feels like people will either be pigeonholed into Kubernetes for all of their deployments, or will have to migrate over to something like Hashicorp Nomad: https://www.nomadproject.io/
Curiously, it also supports Podman as a task driver: https://www.nomadproject.io/docs/drivers/podman