Comment by mroche

I believe GP is referring to the early termination of CentOS Linux 8 at the end of 2021 rather than matching RHEL 8 to 2029. Red Hat reallocated resources to CentOS Stream for 8+, which EOLs at the end of their respective RHEL major release's Full Support phase (the first 5/5.5 years).

As a result, new rebuild distributions spun up to fill in CentOS Linux's role in the ecosystem as bug-for-bug clones.

CentOS Linux 7 is and will still be maintained until the mid-2024 EOL of RHEL 7.