It's not sustainable in any way and there wasn't exactly a democratic process by which the residents of Seattle agreed to having a section of their city turned into an autonomous zone. Though it could be an interesting experiment to do this somewhere, I think it'd have to go through a vote.
it is still a protest, right? this is why peaceful protest is so hard, because as soon as it stops being violent people find some way to dismiss it. when stuff is being set on fire, the argument is "why can't they protest peacefully", but when the protest is actually peaceful we get critiques like this one.
Why couldn't it be positive? I think it's fair to say that these are early days and there is a general lack of data about what's going on, but most of what I've seen has been pretty positive.
Here's a video I watched from inside: https://www.facebook.com/watch/?v=610393902995230
I think parent mostly meant mad max wasteland and utopian are both two extremes.