The security considerations reference seems to require a sign-in to read. But something tells me it is primarily focused on company security and not the personal security of the employee who does not want their voice data to become company data and eventually end up in the hands of less savory entities. Startups that claim this can't happen are most likely blowing smoke up your ass.
more often I see this used as an excuse to not clarify ideas to stakeholders / make proper tickets / contact needed parties with info they will need. "here, just watch the meeting" -- huge waste of time.