@diggity While this practice is expected (as the article notes, other companies do it as well), most users are definitely not aware of it and I think that many more people would be uncomfortable using these devices if they did learn that this isn't all just being processed by computers. Some of that conversation happened during the Snowden revelations---is it okay if it's just computers "listening" rather than a human being? (Of course, it's never just computers.)
It's also another example of AI capabilities being over-sold to users.
Thanks for sharing!