from your comments:
"I found the UI unappealing and the heavy use of rotation effects amateurish."
that is mean, although because it was about Microsoft/Windows Phone 7 as a whole, there is almost zero direct effect on the people who worked on it, and therefore may reduce it's meaness factor by 0.001%, but amateurish and unnapealing? come on, that reveals negative energy.
You have a specific comment about some identifiable aspect of the rotation effects? OK. You have evidence that the new wave of Zune-ish Windows UI style is not popular? Neat. You want to compare some design decisions between the WP7 UI and the iPhone or Android UIs? Sure, go for it. But if you have nothing to say, why say it?
Anyone can say whether they like or dislike something, and if that's an acceptable contribution in itself, everyone will. Welcome to Gizmodo and Engadget. The end result is that more substantiative comments and comments from actual experts are covered in goop.
Also, that type of comment you refer to, gets usually downvoted on HN.
And those type of harsh reviews tend to be quite standard... at least in New York. Watch the doc: September Issue. That type of tough critique results in amazing work.