Earlier quoted context omitted.
You must be applying to the wrong companies then. I just got done doing interviews, and I looked at what the second round candidates had available on GitHub and their personal site, and the one who got the job had about 5 projects that were impressive. Good employers care. I care. Its not signaling. Its important.
Best company I worked at looked at my personal site and Github, albeit briefly, ahead of time and didn't ask much if anything about it (IIRC). They asked more peer-level questions. Pretty casual. As my first job out of college they didn't expect much from me but later told me the other devs were impressed. Best group of devs I've ever worked with. All of them were pretty smart, wrote nice code, comments, knew how to…
i bet the question was: "what has HTML5 done for us?"