How is the device or software supposed to deduce your wants without your expressing them? How does it know what you can and cannot hear, and that you chose to turn down the music (rather than explicitly turn it off) because it was distracting to some other activity rather than because that was the optimal setting for hearing the music while not waking a sleeping baby in your arms? And when it decides to shout the weather rather than voice it at the same level of the music which results in waking the baby, how "smart" is that?

Same thing with the Google Home's. The first step in our good morning routine is set the volume low and the last step is increase the volume again at the end.