X in this case is copy-pasting code into production from blogs that explicitly say not to copy-paste their code into production. I do not feel it was omitted fr

X in this case is copy-pasting code into production from blogs that explicitly say not to copy-paste their code into production. I do not feel it was omitted from the article, it was stated rather directly more than once. Perhaps you were expecting a description of why that particular code was unsuitable for production? The blog is about the process of writing code, not the code itself.