The critical feature is that it’s always listening locally for a wake word. It doesn’t record anything until it hears that. There’s no real difference between

The critical feature is that it’s always listening locally for a wake word. It doesn’t record anything until it hears that. There’s no real difference between “my Echo claims to only do low power wake word recognition when idle, but actually sends everything to Amazon” and “my cell phone claims not to listen to me, but actually sends everything it hears to the manufacturer.”