The home page is slightly misleading, the nginx config is of course the easy part, the hard part is to correctly archive all the previous versions of your website every time you make a change. I thought this website provided an archival service but it does not.

People who care enough about preserving history and current links probably already do that. People who don't care aren't going to start now because of this page. Especially those who have dynamic content and probably don't want to keep running a million different versions of their backend forever.

If you like something on the web then make a copy.