This is not using git as a backend, it is merely using GitHub's static web hosting to serve files. Still impressive, but git could have been replaced with FTP here.
Don't think I agree. He is using a real SQL database stored in git. You can run queries against it. He's hosting a database in a static web site. I don't see this as an ftp clone.
The database is stored in git, but is using GitHub actions to create a tarball of that database that is then severed as static files on GitHub pages.
It being stored in git is irrelevant to the end result. The same exact content without git could be on S3, or any other static hosting, and it would work exactly the same.
Another example, is the following map _using_ git, or is git just a method to get free hosting from Microsoft?