Right, but once this is implemented there is no excuse for audio to be "sent home".
Of course there will still be usage analytics, etc. But it does increase privacy to some degree, especially when compared to sending all audio after a certain phrase is mentioned.
They do need an excuse, however most likely it will be "to further improve our models with more data", which could certainly be true, much to all of our distaste.
We have to wait and see. I'm sure we all look forward to a completely offline solution.
Of course there will still be usage analytics, etc. But it does increase privacy to some degree, especially when compared to sending all audio after a certain phrase is mentioned.