If they are in the ubi namespace, they are freely available. The Container Catalog also will tell you if you can pull without a login when you look at the details of a container.
Can these containers be run hosts that are not RHEL? It seems like it's allowed, but I'm not completely sure I read that right.
I'm also looking to know what packages are available in RHEL8 that are not available to UBI containers. I'm not able to find information as to what subset of the RHEL package universe is available to UBI containers. If you're aware of information on this I'd love to be pointed to it.
That video adresses a bunch of the issues noted. It briefly shows provisioning, the editor, deployment, issue tracking in action, and the narrator overviews the vision & reasoning. It should be touted more prominently.