Partially agreed, many times it's just a patch over a codebase that's stuck only running on JDK 8 - people expect tuning to be sufficient when the code is slowly rotting.

I'd argue that most systems that won't die out eventually will need a rewrite, or alternatively, in the modern day we'll see more and more polyglotic systems popping up.

Therefore it always makes sense to explore the best options for a particular bit of development, regardless of whether it's Node, Python, Java, Go or something else.