If you have to call somebody and you are running late and have a busy day ahead it is very useful. It might not happen often but it might where you don't have time to call to book a table past 9am once you're working so you set it for google assistant to do it at 9am there is certainly a market for that.I agree with the quoted post. I’m not lying to myself. How much time do you need to save that you can’t make a call yourself and, you know, talk to a real human. If someone calls me with a damn robot I hang up. Pure and simple! It cracks me up that folks think they’re so busy they can’t possibly do two things at once.
Or as said some just aren't good on the phone booking things such as a table for restaurants or even to book a takeaway.