With Alexa, you can tell it not to listen unless you use the 'wake word'. Theoretically, then it only responds to your query, ie, 'Hey Alexa, play Jimi Hendrix'. It should not respond to 'Hey honey, where is my butt scratcher'.
If you do not tell it to only listen for the 'wake word' it listens to everything. I believe you can also set this in the app (I'm too lazy to look).
However, anything that has a camera.... black electrical tape or a hood over it! I do not want to be on 'The Horrors of OnlyFans'.