Why print anything related to programming at all? What's wrong with opening the PDF on your computer and putting it side-by-side to your IDE? Isn't this more practical anyway? (Full text search, being able to copy & paste, and so on)

Of course you can argue that some people prefer reading on paper over reading on a screen. But that argument would be a strawman: The original commenter said they would print this specifically for the case of a broken internet, meaning their normal behaviour is to read that stuff online, on screen.