As I write your post is 7 hours old. I saw 4 posted in the US for 2017 so perhaps being on HN is getting them some attention. But yes, there were things from 2012.
That's great! As mentioned my initial take away was at least it was a good place to start researching companies that actually have FOSS positions available whose focus is on contributions and not just using/understanding FOSS.
After my comment I read more and it looks like they want more contributions and, I agree, being on HN probably helped!