The reason people use GitHub is everything around the git hosting: the web interface, the account system, pull requests and issues, forking, comments, wikis, Pages, even the desktop and mobile apps. Hosting git repositories is straightforward, by design.
This article is only slightly more sensible than claiming that S3 is a GitHub competitor because you can git clone over HTTP.
This article is only slightly more sensible than claiming that S3 is a GitHub competitor because you can git clone over HTTP.