If that's true, this would go down as one of the most monumentally stupid executive decisions in Open Source history. It would make them look really, really stupid, like they had no clue why their users used their products.
Nobody wants to use CentOS. We have to use it because it's the cost-effective alternative to RHEL. And nobody wants to use RHEL either, but we have to, because vendors won't support anything else.
Part of this is our (the users'/businesses') own fault. We allowed our businesses to get away with depending on an OS with no support until we needed it, which is not really sustainable.
What we maybe should have been doing is creating vendor-neutral open standards for the platform, like a standard kernel (vanilla, anyone?) and a standard userspace distribution (vanilla, anyone??). That way any Linux distro could "meet the standard" ("Install package standard-distro-20200816 to use packages and settings aligned with the standard", and then every vendor could support "the standard". Vendors wouldn't need to lock themselves into one distro, and we wouldn't either. Basically a POSIX for Linux. But there's no money to be had in that.
(It is in fact possible to run a Linux distro without patches. It's buggy as all hell, but it can be done.)