It seems to me he's justified in not wanting to waste his time writing patches that wouldn't be accepted anyways.
Zed is a gifted hacker of software systems, but I don't really think he's all that good dealing with other mammals.
I'm all for it to the extent that Zed is building his personal brand and (in essence) being a self-promoter. If he really feels self-righteous about it, then that's a bit worrisome.
Zed vs Guido is exactly the sort of David vs Goliath story that makes for entertaining reading...
He is free to provide packages that replace core python libraries. The fact he doesn't want to do so and would only give his contributions if they are included in the standard Python libraries is childish, at best.