I haven't been really keeping up with this RHEL drama, so I'm probably going to regret making this comment. But about this bug merge request in particular, you have to remember that RHEL's main target audience is paying enterprise customers. It's the "E" right there in RHEL. So stability is a high priority for their developers, since if they accidentally introduce a bug to their code, then they'll have a lot of unhappy paying customers.
The next comment that was cropped out of that screenshot basically explains exactly that. While the Red Hat developers probably appreciate the bug fix, the reality is that the bug was listed as non-critical, and the Red Hat teams didn't have the capacity to adequately regression test and QA the merge request. But the patch was successfully merged into Fedora, so it will eventually end up in RHEL through that path, which is exactly what the Fedora path is for.
The blowup about this particulat bug doesn't seem justified to me. Red Hat obviously can't fix and regression test every single bug that's listed in their bug tracker. So why arbitrarily focus on this one medium priority bug? if it were listed as a critical bug, then yes, the blowup would be justified.