I see nothing in your examples that would make me not buy the Apple iwatch first generartion.....
How is the first ipad only having 256mb not a 1st gen problem? i owned on and it was slow and they stopped supporting it very quickly. They added more for gen 2 which made a world of difference. that is a perfect example of a gen 1 problem....
I would argue the price cuts on the 1st iphone are one as well since Apple even had to offer gift cards to users because they complained so much.
The 1st gen air was not that great either...
Apple makes good products but don't act like they are perfect. They have a reputation about 1st gen products for a reason.
The watch in particular i think will be much improved in gen 2. Battery life especially since the this one is pretty bad.