Um... seriously? This is a rant? And people are agreeing?
That was in the "techie" section where they were specifically comparing it to other e-readers. As they pointed out, the Kindle is only 10oz which makes the iPad 2.5x heavier. They also never said it was "too heavy" but instead that it starts to feel heavy in your hand after a while when using it as an e-reader.
If it's an e-reader you're after, then there are better choices then the iPad. That's what they were saying in the article. Context matters. Here is the actual passage and the only
place the word "heavy" appears in the entire article:
There’s an e-book reader app, but it’s not going to rescue the newspaper and book industries (sorry, media pundits). The selection is puny (60,000 titles for now). You can’t read well in direct sunlight. At 1.5 pounds, the iPad gets heavy in your hand after awhile (the Kindle is 10 ounces). And you can’t read books from the Apple bookstore on any other machine — not even a Mac or iPhone.