It's about how you use it

"I'm still here: back online after a year without the internet"- in which he leaves the internet, and all's well, until it's not anymore; all his bad habits catch up with him offline too. Also, you can't just quit the internet alone. It's part of all our life together. 

Don't be a gargoyle with Google Glass. Don't be with people but not actually with them. Don't tolerate other people being gargoyles.

Is Glass an anti-distraction tool? Could be. So long as you can ruthlessly and efficiently curate what goes into it (or if the algorithms it uses are good at doing that for you). Given people's abilities with their email inboxes, I'm not sure, but I think this writer's on to something: if people have a low cost way to get into your visual field, that'll be a problem.

So what are we left with? "The Internet, or Google Glass, or whatever technology you want, isn't good or bad in itself; it depends on how people use it. (which depends partially on design decisions of the people making it.)" Xkcd is right on.