ehh, he's missing the point entirely. It's too bad he's disabled comments on his post.
Github is about social coding, whether that's private or public. It's about having a very, very nice UI on top of features normally hidden away behind the command line. It's about encouraging you to share your code.
Anyway, if you read through the rest of his blog it's clear he's a pythonista. And that's fine. But - jealous much? :-)
If you're going to rant, contribute something meaningful, don't just hate.