Irrational? No. At the heart of this demo is deception. After the deception comes "impressive tech" and all the rest.
Booking hair appointments is one thing, but we all know these systems will be babysitting our children, teaching them new things, and responding to their verbal prompts.
Emotional development in children is crucial for psychological health. FAKE synthetic emotion is not healthy, it's not cool.
Having "Googlers" at the top of the ethics pyramid for AI systems in our homes, is worth a healthy dose of fear and loathing. "We are Google. We don't need to fake demos [of our fake human voice]" is precisely why Google shouldn't be dictating the terms of AI standards around ethical concerns and communication disclosures.
This is about more than hair appointment bookings.