I can't downvote. The author points out his differences and provides his reasons why. The criticism doesn't add any value to the conversation because it has been addressed already by the author himself.
How is what Downey did any different from me writing a book and stating that correct spelling, grammar, and editing would be too inconvenient for me, so I'm just going to type whatever I feel like and that should be OK, because I addressed my lack of quality and attention to detail during my introduction?
By the way. Thanks for commenting.
Small mercies that Python community does not speak this.