They can do what Docker and many other software providers do that are committed to cross OS functionality. They could build packages for those OSes. Example:
The install instructions you link to are relying on the OS providers to build/package Podman as part of their OS release process. But that is notoriously out-of-date.
You could argue, "Not Podman's Problem", and, in one sense, you'd be right. But, again, it leads to the question "Why wouldn't they make it their problem like so many other popular projects have?" and I believe I answered that previously.
They can do what Docker and many other software providers do that are committed to cross OS functionality. They could build packages for those OSes. Example:
https://docs.docker.com/engine/install/ubuntu/#install-using...
The install instructions you link to are relying on the OS providers to build/package Podman as part of their OS release process. But that is notoriously out-of-date.
You could argue, "Not Podman's Problem", and, in one sense, you'd be right. But, again, it leads to the question "Why wouldn't they make it their problem like so many other popular projects have?" and I believe I answered that previously.