In fact, the first thing I tell aspiring developers is to start reading HN on a regular basis if they already aren't. It confers a sort of broad awareness of various stacks and ecosystems over time that's hard to obtain otherwise.
I try to keep my distractions to a minimum level but I've often encountered comments and articles on HN that have been of great benefit to my work and my clients. Things like a service I've never heard of, a library being used in a way that I haven't seen before or even just personal experiences.
Hell I even use HN to minimize distractions such as reading only the comments section about some new product Google/MS/Apple released(or is killing) just to get an idea of what's out there in the market and if it is of any use to me.
Making sure you are informed about what other people are making is useful and is part of your job as an expert. Now if I can just find an application for the CRISPR enhanced crypto sea-monkeys that I learned about yesterday that should really help us out.