The author is also complaining that blog posts are n-copies of something original. This whole programming and cs business is all like that. How many of us read academic papers that first described this algorithm or that technique? Most of us never do. We are consuming copies of copies of copies and it just works!! A blog post by a beginner on something might more approachable to other beginner who might find the expert's explanation intimidating, maybe because the expert that just assumed his audience knows so much.