I rarely tell people to throw their devices into the sea, but you should throw your Amazon Echo into the sea.

https://www.wired.com/story/everything-you-say-to-your-echo-will-be-sent-to-amazon-starting-march-28/

Everything You Say to Your Echo Will Soon Be Sent to Amazon, and You Can’t Opt Out

Amazon is killing its “Do Not Send Voice Recordings” privacy feature on March 28 as the company aims to bolster Alexa+, its new subscription assistant.

WIRED
@evacide Is it feasible to add a 'push to talk button to the device? That may be feasible if its internal microphone is accessible and has wires that you can cut and splice.