It's not illegal for you to remember, it's illegal for you to record. There's a difference.

For me, I don't want to live in a world where if I say something embarrassing or not well thought out, someone pushes a button and the last 15 seconds is transcribed as evidence. That's a different world to the previous one where it would be someone's word fori it.

As for the fact that phone could already do this, that's not the point. Phone users have to go out of their way to make it happen so it's generally unlikely to happen. The watch feature though is always on and just waiting for you to press "save last 15 seconds"