Can you explain why? I went back and reread it and it said the same thing I thought it did: that the fix wasn't a big deal and they were moving forward on it.

I agree it isn't a hairy fix, but think that it would have been better for everybody if it had been made before a SHA1 collision was found, as has been repeatedly proposed to Linus in the past. This would have avoided the entire discussion about SHA1 and git, and all the angst that went with it.