Do you really want to stick with the "technophobe" argument? I'm in IT. I hang on this forum a lot. I have a plethora of gadgets, and with regard to cameras I have them on my RC vehicles. I have seven on my house. I have a front and rear facing 1080p Mobius dashcam on my car even. I have a helmet cam for my motorcycle too (with bluetooth audio system). New tech is sweet, and cameras are fine!And I'm sorry, but assigning your particularized sensitivities and paranoia to "most people" is disingenuous and silly.
Bottom line: If you don't want someone with ANY new piece of tech to be a dick, don't be a dick to them. Glass is no different than ANY other device with a camera on it. The difference is YOUR perception and paranoia.
But I'd never be such a dick as to wear a camera on my forehead all day all up in people's faces and indoor venues and the like, and if I did have a camera on my forehead giving the impression I'm recording people I'm talking to up close all day or go into a public restroom with one, I sure as heck wouldn't act bewildered and confused when someone pushed me out and gave me a lecture about being a douchebag (or worse).
I honestly shouldn't even have to explain this.