Earlier quoted context omitted.
I think Siri and Alexa are simply at the end of their roads. To move Siri and Alexa ahead, we'd need a general AI so powerful, it would change the whole world. I wonder if, within my lifetime, it will be possible to tell a digital assistant to "order all the ingredients I need to bake the cinnamon buns as detailed in the cinnamon bun baking video I watched last month with the Chinese lady that doesn't have an accent"…
Right, the missing step to make these assistants actually-useful beyond very simple tasks like "play [album name]" or "set a timer for 5 minutes"—which are basically just a voice-driven command line—has almost nothing to do with voice recognition per se and is more-or-less identical to the problem of "invent AGI". It'll be useful when you can have it create, say, a menu and shopping list for your week, interact conve…
You want to be able to give a few parameters for a trip you're taking and get some choices back. But, as you say, that's far more about "intelligence" than the type of input.