Redditor 1: Came here to say the same. Most of the context api blob [sic!] posts I’ve seen out there don’t add anything over the react documentation. Why do people find it necessary to write the same thing over and over again?
Redditor 2: ‘Blogs and articles are great to have on your CV’ - my company’s social media guy
Gaming the hiring process is one of the reasons why so many superficial blog posts abound
P.S.: By the way, here's another good example of a weak technical blog post, the first half of which (about the four libraries used in the example) is an unfocused fluff, and the second is trivial enough to be better explored elsewhere (e.g. in this earlier and detailed post by Tyler McGinnis).