The way it was explained to me was Fedora = RHEL Alpha, CentOS Stream = RHEL Beta, RHEL is Stable, then there are downstreams who build against RHEL. Only those who are downstream of REHL are effected by the changes. Both Fedora and Cent are necessary development platforms to support everything that eventually makes it down to RHEL in stable condition. They both depend on RHEL for funding, but RHEL depends on them for testing.