With the Homepod Mini being so accessible and rumors swirling that a new version of the Homepod may be coming soon, HomeKit has started to grow in popularity. Apple is typically touted as one of the better companies for keeping information secure, but you can always do more.
To change “Hey Siri” behavior, first go to Settings then to Siri & Search. After that, tap to turn off Listen for ‘Hey Siri and Press Home or Side Button for Siri. Turn off listening history With this setting, you can stop Siri from accessing information from Apple Music and Podcasts. Apple uses this information to learn more about what you like and listen to for music suggestions.
To turn off services, open the Settings and go to the Privacy category. Then, select Location Services, Siri & Dictation > Never.
The part of the article about turning off hey Siri seems like a bit of a mess and contradiction. You need to re-read and edit that bit. (Unless I’m missing something)
And interestingly warn the heck out of you for any Google products but not their own.