Regardless of his behavior, the point he's making is totally valid. You can no longer claim that "I'm doing nothing wrong, therefore I don't mind being recorded on security cameras wherever I go" - if you saw the sheer extent of footage collected of you and the data that can be extrapolated from that footage, you would be horrified.
Fixed surveillance cameras might seem passive, but they really are typically more intrusive than this guy's project. That's what makes it so interesting to me. I totally understand how it'd be creepy to have someone physically walking around recording me, but in reality, a campus-wide set of "passive" surveillance cameras (say, at my workplace) will gather far more information about me than this guy could ever hope to record on his own.
Yeah I agree and with improvements in the technology it will get even worse. Cameras can already have pretty decent microphones and speech-to-text technology is pretty damn good so I wont be surprised if soon they start recording sound and analysing it in realtime. It wont cost all that much compared to a lot of other things.
However I was only trying to explain the behaviour of the people.
Yeah, I think the point could have been made without the jerkiness, though the jerkiness does make the expression of the point somewhat "unique". Three ways to get a better response: wear a sign that says 'security camera', have a display showing the surrounding circle of your GPS location on google street view, and give answers to "what are you doing?".