Google is changing how Google Home's Smart Speaker and Nest Hub's Smart Display respond to voice commands about lights. Instead of repeating your command, Google states that the voice assistant simply responds with a confirmation signal if the device is in the same room as the lights you want to control.
According to Google's announcement, the reason for the change is that the longer answers can be loud and disturbing, especially late at night when you want to use your language assistant to turn off your bedroom lighting. The change affects all the commands you use to control your lights, whether they are turned on or off, or whether the brightness is adjusted all the way. The announcement specifically mentions the change to the Google Home and Nest Hub devices. However, we contacted Google to ask if other Smart Speakers and Smart Displays are affected by Google Assistant.