I haven’t seen this in person so I can only speculate, but I bet they’ll only provide the sources as a tarball or something instead of a git repo, which will make it a PITA for anyone do actually do anything useful with it. I mean, you could potentially still build a full distro from it, but you wouldn’t be able to feasibly maintain it without the ability to do a sync and merge from upstream. So this way, Red Hat achieves their goal of being able to kill any spinoff distro, whilst still remaining compliant with the GPL.