Dateline today, all verbatim... (see the cite for more detail)

"The company has turned off storing audio recordings for all users
until they opt in again..."

"although Google is turning off the setting to save audio recordings for
everyone, it's not changing the policies for audio that has already been
uploaded. If you want that deleted, you can go and do it yourself."

o Google is sending a complicated privacy email to everyone - here's what it means
https://www.theverge.com/2020/8/5/21354805/google-email-audio-privacy-opt-in-human-reviewers-assistant

"Google says the precise number of users getting the email is
confidential. It should land in the inbox of anybody who has interacted
with a product that uses Google's [freeware] voice AI, including apps
like Google Maps and services like Google Assistant."

"If you opt in to allowing Google to store your audio, it gets used in two
ways. There is a period where is it associated with your account.
*Google uses that data to improve voice matching*..."

"As of June 2020, the default timeline for data getting automatically
deleted is 18 months - but only for accounts created after June 2020.
If your account is older than that, you'll need to manually change your
deletion timeline."

See also:
o How to delete Cortana recordings and protect your privacy
https://www.theverge.com/2020/1/23/21078549/how-to-delete-cortana-microsoft-recordings-privacy

o Deleting your Siri voice recordings from Apple's servers is confusing ¡X here's how
https://www.theverge.com/2019/8/2/20734681/apple-siri-privacy-settings-how-to-delete-voice-servers

o How to stop Google from keeping your voice recordings
https://www.theverge.com/2019/5/13/18618156/how-to-stop-google-voice-recordings-storage-assistant

o How to protect your privacy on Facebook
https://www.theverge.com/2019/6/7/18654238/facebook-privacy-data-information-ad-settings-how-to-protect

o How to hear (and delete) every conversation your Amazon Alexa has recorded
https://www.theverge.com/2018/5/28/17402154/amazon-echo-alexa-conversation-recording-history-listen-how-to

o Amazon will let you opt out of human review of Alexa recordings
https://www.theverge.com/2019/8/2/20752418/amazon-alexa-human-review-recordings-opt-out-eu
--
Privacy is doing a lot of things, in a long chain of events, one by one.