But if it was one tourist..
...with thousands of cameras all over the town you were on holiday in, able to piece together your every movement for the entire holiday, it would be fucking creepy. Individual glassholes may not be an issue, but Google getting the feeds from millions of these things is well beyond creepy and into sinister.
It's bad enough that they know where most Android phones (and their users) are most of the time, but that's something you opt in to when you take their services. I haven't opted into that and I don't want them spying on me.