^^ This is totally the point of this run of Google Glass. While this is a fair and worthwhile personal essay, I don't think it's a particularly impactful statement about the potential of the product. He's basically saying that, for $1500, he wants to be blown away now.
He doesn't want to pay a substantial premium "just" to be part of a privileged set of early-adopters. Everyone knows that this is still a beta, and improvements are on the way, so he's just saying the current iteration can't push him over the hump to hold onto the device (as opposed to recoup his cash).