At least in interviews I found it tells a lot more about their proficiency than say knowing how to invert binary tree in under 20min or solve a digital circuit diagram in with object oriented principles.
Node.js is a technology that raises red flags when someone advocates it. I've heard stuff like "it's async so faster", "it makes things non-blocking so you get more performance not like with threads", "you just have to learn one language and you're done", "...isomorphic something..." When digging in to discover if they knew how event dispatching works or how these callbacks end up called data comes in on a TCP socket, and there is usually nothing.
The other red flag is the community. Somehow Node.js community managed to accumulate the most immature and childish people. I don't know what it is / was about it. But there it was.
Also maybe I am not the only one, but I've seen vocal advocates of Node.js steam-roll and sell their technology, often convincing managers to adopt, with later disastrous consequences. As article mentions -- callback hell, immature libraries, somehow the promised fast performance guarantees vanish when faced with larger amount of concurrent connections and so on. I've seen that hype happen with Go recently as well. Not as bad, but there is some element.
Now you'd think I am 100% hater and irrational. But one can still convince me that picking Node.js was a good choice. One good thing about Node.js is it is Javascript. If there is a team of developers that just know Javascript and nothing else. Then perhaps it makes sense to have a Node.js project. Keep it small and internal. Also npm does have a lot of packages and they are easy to install. A lot of them are un-maintained and crap but many are fine. Python packaging for example used to be worse, so convincing someone with an "npm install <blah>" wasn't hard.