Source?
[1] https://www.google.com/search?q=%22baked+beans+make+me+fart%...
[2] https://www.reddit.com/r/videos/comments/79i4cj/youtube_user...
[3] https://www.youtube.com/watch?v=jjbz1N4qBQA the host themselves did the same.
In the original comment of mine that you replied to, I suggested how to make the methodology even more scientific with a double-blind study. As far as anecodtal evidence this is going to be the best that you can do. I personally find it convincing. These are reasonable people testing things as scientifically as they can.
From the evidence in those videos, I’d rather be considering whether fb is part of a future AI continuum monitoring and influencing the past (from the future in which the AI exists) by messing with people testing this feature. Yep, cat is alive on Facebook/IG, days later. Microphones and big data/AI are but two slits through which photons can pass, in the experiment known as fb.
In fact, some people were incredulous and re-ran the experiment thinking there's no way they would start getting Spanish ads: they did too. That's all it takes to convince me. I mean what other mechanism would get back to Facebook? As far as I know TV's don't report back which specific channel they're tuning into (all channels are streamed concurrently.)
I'm all for a more scientific test but at the moment I find the anecdotal evidence quite convincing. I just outlined how a scientific test might work here:
At the most in those cases there’s enough info to suggest data sharing is going on at the least, but not enough to confirm anything regarding the fb app itself and the mic.
Worth investigating more, though.