I know the current trend in startups is all about "show me your github", and I admit that it has some value as a filter, but I feel like I'm seeing people writing fairly uninteresting code snippets and blogs just to put it on their resume, in the same way that high schoolers join a bunch of student groups to beef up college applications. There are plenty of programming jobs that require writing complex code and having deep domain knowledge, and to discard those candidates because they can't show you their code and have other hobbies outside of work is just not smart.