I thought this was a topic about Alexa (a voice UI) using your voice (actually, installed skills) to deliver more targeted ads. I don’t see the public discourse connection here?
It's only a matter of time before Alexa will only read you the "right" kind of news as to remain advertiser-friendly. It already happens on mainstream social media, where beyond actual illegal content, plenty of legal content but that happens to be critical of the proverbial "establishment" gets demonetized, banned or even silently shadowbanned.