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That's simply not true. They have received a TON of positive feedback on Windows 8. It has created more interest than any of their previous versions of Windows.
Don't mistake the vocal minority with the target audience.
Presumably you've some insight as to what this "TON of positive feedback" from it's "target audience" consists of and who they might be.
Far as I can figure it consists wholly of those who'd be quite happy with an iPad instead (not as well as)of a computer. It's a large market, but it's not nearly as inclusive as the one MS has now. It's not even as if they couldn't have both.