If you read much of what Guido writes, you'll see that most of his decisions com...

If you read much of what Guido writes, you'll see that most of his decisions come from a lot of thinking about a topic or problem and then going with what his gut tells him. It just seems to be the way he works, and I'd argue that the results speak for themselves.

And I can understand how you would wish they used git, but if you're taking this as a "slap in the face" at all, I think you're reading it wrong. They did some research on various similar tools and picked one.