If you have Siri or Alexa on your phone, or use the Google one that comes with an Android, it is indeed listening all the time, whether or not you use it.
When I’m at someone’s house that has Alexa, it’s fun to say, “where will we put the bomb? Or “At what time will the bomb detonate?”
The point is that you don’t have to use them. The voice command feature is built in.
It wasn’t just a coincidence that she got those ads.