It's pretty clear we didn't accepted any PRs since December 2016 until Red Hat decided to replace our code, which started early June 2018. That's 18 months.
If I am upset about anything, it is this: https://bugzilla.redhat.com/show_bug.cgi?id=1614277#c7
> It's pretty clear we didn't accepted any PRs since December 2016 until Red Hat decided to replace our code, which started early June 2018. That's 18 months.
You are asking: "why didn't RH help out", you also didn't accept any pull requests. That surely would answer the question about why they didn't bother with pull request.
The question is then, how exactly do you think they have helped?
Maybe you should read the announcement and leave it at that.