I hate that when criticised, people demand that the criticizer fix the problem they're pointing out. I realize your request is less strong than that, but fixing "your" software is not "my" problem. Especially when you consider that nearly every piece of software I've ever used has bugs, and most of the bug reports I submit are ignored.
I'm sorry; No. I'm not demanding he fix it; I'm asking he do something more constructive than nothing. Python isn't "my" software - it's "our" software. Zed's smart enough to contribute and help fix things - I hold him to a higher standard than someone just walking in off the street.
Python-core does not ignore bug reports, especially ones which really fix things, and come with a patch. Asking him to help isn't out of bounds.
Though I agree these things are best addressed patch in hand, it's worthwhile pointing out that there are design issues that people do need to be aware of to prevent future occurrences of the idiosyncrasies he is mentioning.