[RickB]

First, you can't blame anyone if they make a tutorial like this. This information is everywhere. So "reproducing it without permission" is technically invalid. Same commands and almost the same configurations are used to do it.

Second, it's recommended to put root outside location according to some posts on the internet.

I guess you understand what I mean? I don't mind when someone likes to write his own tutorial based on my tutorial, no problem! The only thing I DON'T want is people who just simply copy+paste my tutorial. That would make my tutorial less findable (Is that correct English?) when using Google. Now the tutorial is more unique.

What do you mean by "put root outside location"?

Obviously you don't want to run nginx, php, or whatever application that is available publicly available. As you mentioned, that's insecure.