Your phone has more sensors on it than these devices and most people have their phones on them 24/7. And most phones have the same voice-controlled features too

Your phone has more sensors on it than these devices and most people have their phones on them 24/7. And most phones have the same voice-controlled features too. Why people are concerned about narrow scoped voice-devices more than their phone is a curious thing. Is it because it talks back to you that makes it more apparent?