Podman is in universe, so Canonical doesn't care unless you pay. Fair enough, good engineers cost money. RH isn't going to pay.
Podman engineers would love to be in Ubuntu, the Red Hat engineers would love to directly upload into Universe. Everything in this thread makes sense, it's a matter of who wants to pay for it. End users have been asking for this for years.
The engineers don't make the decisions. Canonical doesn't want to pay, Red Hat doesn't want to pay. Users stuck in the middle.
I get podman from brew even on Linux because the idea that vendors fighting over uploading tarballs to a server is stupid. Fuck distros.