That's fine, and I don't use Rails either - but this post was about Rails. People who use or want to use Rails are likely to benefit from the new features. Even if that number has declined somewhat, it's still a lot of people, that still merits development, it's still a topic of interest to others on HN, and it's easy to avoid if you find that you aren't personally interested.

Besides which, I can't see that a switch from Rails to Node is going to have any strong advantage if you are equally proficient in each. If they're really about the same, this would boil down to "I like JS more than Ruby," which is not about the technology so much as personal feelings.