The first iphones and ipods were stunning for their time; they changed the industry and people would wait for hours on end in line at stores. It seems like a reach to compare these glasses to that.
I'm not comparing actual devices. I'm comparing how large they were when they were first released. The original iPod and iPhones were bricks compared to what the latest/last versions and it didn't have a touch screen and cameras.
The point is, the size of new technology tend to shrink fast.
The original iPod might have been a brick compared to the iPod nano, but it still wasn't that big. I don't think many people today would be upset to carry an original iPod. It was much smaller than the discman sized devices it was competing with.
The original iPhone was one of the smallest iPhones ever made. It did nothing but get bigger over time. If you want to compare the modern smart phone to a Zack Morris phone, or the bag phones that came before it, that would be a better way to go if the argument is size reduction over time.