True, but potentially very dangerous material in other ways. It's not hard to image kidnappers piecing together stolen audio clips to create fake messages as part of a ransom attempt. Or scammers creating audio clips to scare parents and extract money. A large bank of audio clips from a child could be used against that child's family in all sorts of ways, especially if the parents don't know the clips were stolen to begin with.
The real question is why you wouldn't already be terrified about having a microphone in your house that is open to the internet.
And even if this were a credible threat, logically we should be more concerned about direct financial theft since it has the same impact, but is far less elaborate (but still far less common than other types of cybercrime).
In Germany it works with grandparents. They get calls from someone impersonating their grand-child in trouble. This works because in many families grandparents live separately and sometimes don't have much contact to their grandchildren (apart knowing that they exist). This threat is so real that there are police posters about this in community centers.
So this works over text messages or phone calls without much sophisticated mimicing. I just imagine a whole new spin of this when AI/DL tech becomes a commodity.
So I quite disagree with the "movie plot" estimation of the threat.
Really though this is pretty cool, when not used for nefarious purposes.
Maybe just avoid anything with "cloud" in the name?
I do exactly that. I treat the word "cloud" in a product name (or feature list) as a huge negative indicator and steer clear.