Google Nest's hidden microphone was never disclosed to consumers
theblaze.com
theblaze.com
Translation: We knew people wouldn't like it, so we "forgot" to list it on the tech specs.
I call BS. I had a printer once that advertised MANUAL DUPLEXING as a features. The marketing department wouldn't forget to list a piece of hardware that costed money as a feature unless they thought it devalued the product.
Google microphones in my house? No thanks.