He’s not wrong. I have an Android phone that will recognize songs playing on my truck’s radio and ask me if I want to download it to my playlist. I’ve also had conversations with folks about certain things and then get bombarded with adds for those exact things. I turn the microphone off, but I don’t think that really stops it from listening.
Last week I took a small pack of Oreo cookies to my office out of mix of different types of snacks.
I never uttered one word and my iPhone was in my pocket until later in the morning so it couldn’t have seen it.
There was some app I had open and ads for Oreos showed up.