Just write in the header of the script: "This script requires Fedora Linux 33 or higher" and forget about outdated OS'es, unless it's your paid job to supported

Just write in the header of the script: "This script requires Fedora Linux 33 or higher" and forget about outdated OS'es, unless it's your paid job to supported them. If you OS vendor refuses to supply you with appropriate tools to do your job, then just chose another vendor. Vote with your foots.