That's kind of a different matter, those stupid glasses aren't as widespread as phones, while we can prevent glassholes becoming the norm, we can't prevent people from using their phones, it's more effective to ask politicians to make regulations or bring companies in court than smash every phone

You must think of the most effective strategy not the most obvious or the one that seems the fastest

Pretty funny that the big privacy promoters downvote these comments all the time.

It's perfectly okay to spy on them, apparently, as long as you do it in a way they don't deem "unfashionable".