I think trying to replace regular GUIs and mechanical inputs in every use case is naive, it seems pretty obvious to me that clicking on a button or pressing a k

I think trying to replace regular GUIs and mechanical inputs in every use case is naive, it seems pretty obvious to me that clicking on a button or pressing a keyboard shortcut is pretty much always going to be faster than uttering a voice command. But there's a huge swathe of use cases where it does make sense, and I think we should be focusing on those - situations when you can't use your hands. Voice assistant technology doesn't even need to be great for this, just good enough that you can look up unit conversions with your hands covered in bread dough, or navigate while driving or whatever.