I learned about Aurora from a HN comment some weeks ago, and it has been so awesome. I really haven't been as impressed with a distro since the first ubuntu. Its just a rock solid base, awesome defaults, and kde being delightful.
I will offer a second positive but more reserved data point. It took me closer to a day to get my custom Bazzite build working.
Switching over to my images using bootc failed because of what I eventually tracked down to permissions issues that I didn't see mentioned in any of the docs. In short, the packages you publish to Github's container registry must be public.
Another wrinkle: The Bazzite container-build process comes pretty close to the limits of the default Github runners you can run for free. If you add anything semi-large to your custom image, it may fail to build. For example, adding MS's VSCode was enough to break my image builds because of resource limits.
Fortunately, both of these issues can be fixed by improving the docs.
The actual process for the image is really just what I said. In the video he sets up a github actions automatic build, and adds signing with cosign (which are also all steps you really want to do) but to have custom stuff in your base os is really as easy as a Dockerfile (or should I say Containerfile ?)
