Typically you want stability and predictability in a server. A platform that has a long support lifecycle is often more attractive than one with a short lifecycle.
If you can stay on v12.x for 10 years versus having to upgrade yearly yo maintain support, that’s ideal. 12.x should always behave the same way with your app where-as every major version upgrade may have breaking changes.
Servers don’t need to change, typically. They’re not chasing those quick updates that we expect on desktops.