Yes.

I mean they say "no", but it's definitely something less than the full production release.

To be honest, I think this is bs. The CentOS community is huge and RH benefits a lot from the discoveries made by the community.

However, doing this will effectively make CentOS as a server OS useless for the most of us. "But Facebook uses it" - well, yes, with thousands of engineers Facebook could run their own distro and still have success if they wanted. Most useless argument ever.

Time to move on and find something else. Maybe good old Debian.

"But Facebook uses it"

Since Facebook actually uses kernels from Fedora Rawhide (necessary for btrfs support I guess), their systems are nowhere near the CentOS you and I would use.

Facebook have their own kernel developers. It was a selling point one of their teams used to try to lure me there.

It must be a classic selling point... a French company (pretty big) told me the same thing to lure me (even if my hypothetical job was not directly related to that fact)

"We spend company resources on work that gets released as open-source software" is always preferable to a company never contributing back to OSS.