I'm on boards about every day, and every time I look at the homepage there's at least 2 posts hating on Zoe.
However, Zoe is fine. She's balanced, and has a lower than average win%. That lower win% is because there are plenty of new Zoe players out there that just fail horribly with her, so I'd say she's in a good spot right now.
So, my conclusion is that people who are posting hate about Zoe (which happens like 6 times per hour) are all just salty newbs. If anyone here can explain to me what exactly they find so extremely broken about Zoe, and I can't explain why, I'll change my mind.
But right now, Zoe is Fine.