I went back and looked at the actual article and you're right. I was confusing the reaction here with editorial from the article.
Thanks for the follow-up. I agree about the comments. People can like/dislike whatever they want, of course, but it seems like a certain amount of weight would be expected if we don't want the whole thing falling over. Personally, I'm happy to carry around a total weight equivalent of a MacBook Pro if that provides a great typing experience and gives me the flexibility to easily grab the naked iPad when using it as a tablet. Other than the very high price, this seems like a great product to me.