I have an Alexa.... and it worries me what she collects. I have her in a far away place I rarely go too, lol. So the only time I come in contact with her is when I leave or enter. I usually just ask the weather and that's about it.
As for phones, I hate how they all want access to all your files and info. They all want location turned on.
If I can't turn off that stuff, I am simply not downloading that app.
I did a recent check on my Google account and went through EVERYTHING and turned it off. Thankfully Google has no location info on me, no advertising info, and saves no history. It also isn't allowed to track my Youtube history. You can turn a lot of it off in your account, but they really burry it.