Your blanket statement is foolish and naive. The range of opinions is far and wide. For example I appreciate Apple's innovation and marketing skills, but I'm no love-blind Apple fanboy and yet I think their mobile strategy is completely game changing.
All of you who are writing these windy pieces about the ramifications of the iPad have just been swept up in a mighty PR storm. Even those decrying the device are just helping Apple.
Largely ignored by the blogs and "PR storm" is this simple underlying fact: with the iPhone, iPod Touch and now iPad what Apple has done for the "computing philosophy" of the world is successfully present an entirely new UI metaphor. They slipped it under our noses, in a 30+ year old world of the windows metaphor, they've marketed and popularized it and now we simply take this drastically different UI as common and expected. To be so cynical about Apple's impact with its mobile line of devices is to have your back to the future of innovation itself.
[Updated based on andrewljohnson's response]