RHEL 9+ (and as a result, its decedents) is built for x86_64-v2 and has increased RAM requirements for certain installation procedures, so now hundreds/thousands of perfectly functional small servers are no longer able to upgrade (to the next EL version, obviously there are other distributions, but then there's the resource/energy requirement to change everything to something new...) (:
the entirety of computing from top to bottom doesn't give a fuck about the environment. The only way to make this "sustainable" is to slow down and fix/maintain things... but of course that's the antithesis of this world we've built.