This would be a stunning own goal by Red Hat (and let's face it, they are the largest driving force behind Fedora, if not in complete and total control of the project). Steam and gaming have brought so many new users to Linux - maybe even doubled the entire userbase - that if anything, they should be doing all they can to support it even better if they really want to increase the size of the userbase.

Even if flatpak is still an option, it will still drive a lot of new and existing users to use non Fedora-based distros, which would be sad for the project. I myself have never been a Fedora user, but I'm really grateful to see a lot of the positive things they do for the Linux community, so this would be a very sad step in my opinion. On the other hand, it would make me even happier if we see more users switching to Debian-based distros instead.