Yeah. We have to assume that everything said within 50 feet of a smart device's microphone is being recorded into a massive data database somewhere, either for marketing directly to the individual or for future access in case we end up on someone's radar.

I heard of a case a few years ago where the FBI or the like was tracking a suspected terrorist. He kept pretty much off the radar, using alternate ways to communicate with cohorts. They were able to use his utility bills/usage to determine where he was and with whom, or the other way around. If his power and water consumption went down but his friend's went up, they could assume he was staying with them. Likewise, if his utility usage went up, they would look to see which of his friend's were down. They can even tell how many people are visiting you and for how long. My assumption is that if you're on their list, it's pretty damn hard to stay off the radar.