Yep, those are scary too. But with phones I can instantly connect to anyone on the planet and make photos and write up stuff I would otherwise forget and browse the largest human knowledge bases on the planet.
For this I have to give in a lot of my privacy and hope that I can trust the device/software manufacturers - meanwhile prevent what I can.
What does google home or amazon echo brings to my life that is so ground breaking that I need another data-gathering device? I may come off as ignorant because I probably am. But I'll reconsider if somebody seriously can tell me how vastly these devices improved their life.