You're not entirely wrong. Parents, and individuals in general, have to more careful. I won't call them total idiots though, because these companies promise those very use-cases through their marketing.

Any device that compromises the privacy of you/others without your/their permission is dangerous, as is a video doorbell for your street and neighbors, a voice assistant secretly used for persona marketing, or even a webcam on your laptop. A false sense of security with a huge potential for misuse.

I won't go into details, but my past gov projects tell me it's better to be safe than sorry.