I don't seriously think anyone at Google thinks Glass is going anywhere. To me, this looks like Google just trying to cement in the public's head that Google=Futuristic technology. In that regard, and pretty much only that regard, Glass has been a success.
I think wearable computing is definitely the future, and Glass is probably a good first stab at it. I don't think anyone thinks glass is the perfect solution, though.
Wearable computing has been around for decades. Even commercial companies. The tech has been and still is too weak to break out of niche markets. But tech progresses.
Okay, but if you want to convince others to share your view, you need to state your objection to it. It's more credible if you back up your objection with realistic examples of what you are concerned about. It's also more convincing if your concerns are consistent with the technology. For example, many people state that they object to the camera on Glass. Yet, DSLR cameras are far more effective at taking high quality pictures from a distance.
