It's much worse in ecosystems that are changing the core frameworks at a rapid pace (hi, React!). If you don't do the same thing Facebook does internally, and continually refactor your entire codebase onto the latest paradigms, you quickly end up unable to adopt new features and 3rd party libraries when you actually need to do so.

If you look instead at a mature ecosystem, like, say, C++ or Java, you might reasonably maintain a codebase for a decade without needing to adopt new language features.