And even then trying to run Docker on Fedora will prompt you to turn off Security-Enhanced Linux features or use Podman instead. So it’s really like, what, 1/2 or 2/3 or Linux support
What? Why would it prompt this? Docker supports SELinux.
I don't know the specific issue, but RH's been trying to push Podman fairly hard...
Fedora is using cgroups v2 by default since last year. This version of cgroups was not supported by docker until a couple of weeks ago. So as a Fedora user you could either use podman or modify your installation to use cgroups v1 instead.
Thank you, I may have misspoke but this is what I was referring to.