All of that sounds impressive, until you see red team pros talk about how the whole apparatus melts before the gentlest of social engineering-

https://www.youtube.com/watch?v=JsVtHqICeKE

I'd also be concerned with leaking of mass amounts of records at once due to a security lapse on servers where it's a bit easier for grossly inadequate protections to lurk unnoticed-

https://news.ycombinator.com/item?id=19191241

I think I've read that Google doesn't even store the original recordings, but distorts them randomly to make them unrecognizable but still intelligible by their models. That seems like a pretty reasonable way to protect people, provided they're informed and there's no link back to the original account.