>It definitely is true, in our RHEL subscriptions we get patches that do not exist in CentOS.
Citation needed. Source: I work at Red Hat and made the policy that stuff needs to go to CentOS Stream first. The only exceptions should be embargoed or critical/important CVEs, those go to customers before CentOS Stream.
If you find any code, features, or bug sizes in RHEL that aren't in stream, it's a bug, let us know and we will fix it.