I don't think this is true. As a developer my job isn't just to crank out code, it often involves doing tasks that are important to the company like interviewin

I don't think this is true. As a developer my job isn't just to crank out code, it often involves doing tasks that are important to the company like interviewing people, writing documentation, occasional team meetups. One of the things that's pretty apparent after spending time on HN and other forums is that these articles when well written are absolutely excellent marketing material. It makes sense for a company to allocate development resources to writing them.