Seriously, who needs to record someone without the knowledge of the person being recorded? That’s a big red flag, a perverted character, there’s no other explanation. Creepy Mark Zuckerberg allowed other creepy characters to share personal moments with him.
Spies and influencers who want to record in places that don’t allow recordings come to mind. Like, besides your pervert case.
Pretty sure any spy worth their salary won’t use the most instantly recognisable “covert” recording device in the world…