This is complete nonsense. The "description", "keywords", and "author" meta tags do not "make your site rank". Neither does the "viewport" meta tag -- and setti

This is complete nonsense. The "description", "keywords", and "author" meta tags do not "make your site rank". Neither does the "viewport" meta tag -- and setting that one blindly may make your site display incorrectly on mobile devices. Setting a canonical link is unnecessary for most sites and may prevent pages from being indexed if it's set incorrectly (e.g, by setting it to point to your home page). Etc, etc.