Google Glass and Spectacles are not even close to the same customer base. Google glass was a luxury beta product for techies with lots of disposable income. Spectacles are targeted towards 15-25yr olds. Google Glass users wanted to use the "future" of technology where as spectacles users want to Snap and share more.

I'm surprised their hasn't been nearly the same adverse reaction to spectacles as there was to glass. Maybe we haven't seen it yet as they haven't been released, but people hated the potential of Google Glass sharing pictures and videos of people without them knowing. Maybe we've changed as a culture enough in these few years.