Red hat didn't create quay, they acquired it. But even if they had made it, I think that's an important and healthy thing to have. You could call it fragmentation, but I see it as taking on a monopoly by offering choice. Docker fully supports alternative registries, so I wouldn't consider that fragmentation either. Remind me a lot of when Apache was the only http server, and nginx came out. Some people said fragmentation, but most said, "cool, we have a choice and some market competition, without which development tends to stagnate"

There are things to dislike about red hat, but quay is one I would praise them for instead.

Hmm, quay came via coreos acquisitions. Can you point me to examples where Red Hat pushed projects to push ONLY to quay.io?