The microphone trust aspect in the article seems like a red herring distracting from what could be a clearer point.

Facebook literally takes your data from their apps and internet, tracks your behavior on the internet, and feeds this data into models of you. These models are so accurate they can sometimes basically predict what you're thinking. Hence the layman jumping to the conclusion that they must be spying though the mic.

A LLM company like OpenAI, and their partners, employs almost literally this exact model. Grabs data from whatever sources to improve their models, to increase the likelihood you'll keep clicking where they want you to click, to monetize you.