Well, let me say this about that ...
Negative reviews are to be taken with a grain of salt, a wink, a nod and asbestos gloves. A lot of times you have to read between the lines to discover why the reviews are negative. Sure if there's a design flaw that will come out pretty quickly, but a lot of times it's either unrealistic expectations or someone's inability to read. Granted, manufacturer's do have product defects, but that's why there are warranties. You also must consider that dissatisfied customers are much more likely to write a negative review, than satisfied customers are likely to write a positive one.
I started with a Moto360, and while it was a decent watch and one of the better looking devices, the battery only lasted 18 months before it started to fail. It was a "version 1" product, so i'd expect a glitch or two. I replaced that with the Fossil Q Founder (read my review
here) last year and it's still my daily driver, holding a charge for a few days and looks great.
That last part is what's important to me. I want a watch to look like a watch, not an iPod with a wrist strap. You see, I appreciate a good watch. I currently have Tag Heuer, Movado, Gucci, Raymond Weil, Breitling, just to name drop a few.

Most smartwatches don't have that look. The Fossil does, to a point.
All smartwatches are going to be a compromise. Either in looks, performance, convenience, etc. You have to decide what you want. If you are looking for a fitness tracker, then I think any watch will be a disappointment. They range from pretty poor, to just okay. None of them that I have ever seen do that well. If you want something for your ironman training, then get something dedicated. (and easily washable

)
I took a look at the
Michael Kors Grayson and it looks very nice. I didn't see too many reviews about it so it must be pretty new. I wouldn't mind owning one. You have to understand though that smartwatches are not taking the world by storm. They are still very much a niche product.