Weird, but I see those reviews as mostly positive, similar to the first gen iPad reviews. No one needed an iPad either, but they sure sold a lot of them. The NYT review kind of nailed for me, and I think will be very similar to my experience. It will take time to set up at first with a learning curve, but by day 3 or 4 the guy loved it.
The basics work really well. Battery life is better than stated, Siri is pretty accurate. The watch is comfortable to wear. The heart rate appears to be accurate. I also think as more apps come on line, the utility of the watch will get better and better.
What I got out of the reviews is that if you have an iPhone and the $$$$, this is really nice addition to the ecosystem.
Yeah and rather than buying a phone every year why not buy the watch instead if you've got cash like that.