How is this different from a privacy standpoint of someone simply memorising what you said in the last fifteen seconds and scribbling it down onto a piece of paper?

You’re sounding… hysterical.

Even if you regularly say things that must never be tied back to you, like.. you are in the mafia or you’re an actual spy or whatever, and every single person around you has this on their wrist listening to every word you say all of the time… Nothing changes for you.

The users of the watches still have to take action to use the audio, which they too would have heard anyway, and could have transcribed and texted to someone or written down.

Oh… wait… are you MIB? Are you concerned that your memory eraser wand won’t wipe Apple Watch recordings of the last 15 seconds, allowing the public to finally know about aliens amongst us?

I know that sounds silly, but unless you can erase the memories stored in human brains, then you must realise that everything you say in the presence of meat computers with audio listening devices attached (ears) can be recorded (memorised).