There is even more on that website:

  What could happen if something went wrong

  Facebook has a history of betraying users' privacy and trust. They've faced record fines for this and have been caught
  hiding privacy breaches from their users. This is the starting point for bringing a device with an AI-powered smart camera
  and always listening microphone that is sending data back to Facebook regularly. They also say they do human review of audio
  snippets unless you chose (and take the time to figure out how) to opt out. The question comes down to, does Facebook have
  your best interests at heart when it collects all the data this device is capabal of collecting on you. In the past--from
  Cambridge Analytic and beyond--the answer to that question has way too often been, NO.