i do not believe it's a sign of anyone getting old or stopping new things, just that i think general social responsibility hasn't been catching up with emerging technologies and Googlers / early adopters could do well in publicly setting civil conduct examples, like taking the Glasses off when going to a public restroom, because people on the other end of recording devices have rights too in public spaces, if not legal, moral, ethical or merely civil common sense.
Case in point is that, for the first time i remember in the short 32 years of my life, a few weeks back i angrily got up from my metro seat and went sat dow as far as possible of a women sitted right in front of me, which was having a loud and unnecessary family discussion with her mother over the phone. She was:
* very notably by the look on peoples faces, not only causing distress to me but to the surrounding people (later afternoon rush hour)
* i could still hear her clearly 2 carriages away
* she publicly admitted during the conversation that having those kind of public conversations was uncivil but would not turn off the call, by her own will
Same goes for the latest tendency (around here at least) of people playing music loud on their phones, again, on public transportation.
There is civil freedom in public space of course, but there are different types of public spaces; closed quarters public transportation is very different from a town square and can only imagine how discomforting it will feel when i'm sat across someone wearing Google classes, wondering if i'm being recorded or not and most importantly, if i as a citizen complain about my privacy, will be recorded and shown up on Youtube in the next minute.
I will never understand why people yell into the phone on the metro. It's loud and talking louder doesn't, magically, reconnect the call.
I wouldn't call this a new trend. You have a number of youths in close proximity and 2 ear cups. It makes sense to use the speaker when more than 2 people want to hear. I used to do the same when I was young and mixtapes came on tape. Now, some idiot sitting alone and singing along I find annoying.