So Facebook recorded your ambient audio, uploaded it to their servers, processed that recording to discover what you were watching, all so they could prompt you

So Facebook recorded your ambient audio, uploaded it to their servers, processed that recording to discover what you were watching, all so they could prompt you with a football icon and an opinion poll? Did they get your explicit permission before turning on that microphone and uploading what it recorded? Or did they hide it behind a button? Did they explain in a way most people would understand about what they were doing with the microphone and where the feature was actually implemented?