This is the first time I've seen his commits, but I do the same thing at work, deliberately. I don't pretend to know his reasons, but I've always had fun with the idea that if there were a super high-level language, it would look similar to a commit message and the corresponding changes would take place. And so I have changes that look like "Optimize the foo() function", etc.
I like the "super high-level language" perspective. I imagine commit history like a (journaling file system's) journal, whose commands can be undone and replayed.
