I don't see anything in the parent comment that says this is a Google-only issue.

Also, the Netflix and Amazon examples don't seem to be in the same category, to me. Every time you interact with Netflix and Amazon, you are doing so deliberately. You are choosing exactly what to give them. You can easily pick another service.

Always-on listening devices, on the other hand, are taking data that you did not choose to give them, and other people's data as well. That's the point in the headline of this article. I would never need to tell guests "If you order something from Amazon, they'll know you ordered it," but apparently I might need to tell them to watch their mouths in my house. There's a big difference.