Obviously I'll avoid purchasing optional "smart" devices that send my data everywhere, outside of my control. The problem is mass acceptance of ubiquitous surveillance, and those promoting and pushing it. I guess that means I will have to do my best to avoid visiting anyone who happens to have an Alexa (or whatever) hiding somewhere.
Even Google's devices chief, Rick Osterloh, says people using his product should warn guests that their conversations are being recorded. To his credit, he even does so(!):
https://www.komando.com/security-privacy/google-exec-warn-yo...
> “Does the owner of a home need to disclose to a guest? I would and do when someone enters into my home, and it’s probably something that the products themselves should try to indicate,” Osterloh said.
Osterloh hits on the truly insidious thing about about microphones -- they never indicate when they are listening and sending your data out of your control. (Camera LEDs also certainly cannot be trusted, but I digress).
To be clear, again, I have full empathy for anyone needing the conveniences this technology promises. I have zero empathy for the companies, "officials", and "authorities" who claim that they must exfiltrate my data so that it can be used for adding convenience, or security, or safety or whatever. It is unnecessary. Smart, creative engineers have proven they can do pretty amazing things with data processed locally, with no exfiltration required. Let them do their job, and let my personal data stay under my exclusive control.
I used to attribute this laziness to incompetence, but the advertising industry has proven over and over and over (decades!) that they are openly and unrepentantly hostile to users. They are malicious. I cannot and will never again trust them.