I think it showcases your expertise. A future employer might stumble upon your write-up and reach out to hire you. You might want to write a book that include

I think it showcases your expertise. A future employer might stumble upon your write-up and reach out to hire you. You might want to write a book that includes the subject in the future. If you get good feedback on the article and lots of eyeballs on it, this validates this idea.