I agree, but isn't that because they release so often? With RHEL releases every 4-5 years, getting the latest docker or kubernetes running would mean waiting ye

I agree, but isn't that because they release so often? With RHEL releases every 4-5 years, getting the latest docker or kubernetes running would mean waiting years, or creating a frankentein RHEL with updated dependencies. Or just use Ubuntu to test it out, and maybe deploy to prod with that (or wait a much smaller amount of time for Ubuntu LTS).