If you wanted a distro that was similar to but not exactly the same as RHEL, then Fedora itself would be a way better choice. And if you care that it's exactly the same as RHEL, then CentOS Stream doesn't cut it.
This is absurd. CentOS Stream isn't just "similar", it has ABI compatibility with RHEL, it's waaaaay more stable than Fedora because the most it can be different from RHEL in general terms is the difference between two Y-releases (e.g. 9.Y -> 9.Y+1)