I’ve gotten ads for things I’ve just thought about. Never said anything out loud about or did any searches related to. It was something in a video I’ve watched dozens of videos about in the past. But on this occasion, I happened to think that I kind of want one for the first time. And I just so happened to start getting ads for them right after, also for the first time. They know way more about you than you think and don’t need to listen to you.
This reads a little overly pessimistic to me. Sure there is a lot of bad, but the ratios presented here seem way off. In most contexts, people are overwhelmingly good. It’s just a small percentage of bad actors that spoil it for everyone.