Are these Nest products sold worldwide? I recently worked on a product that included a microphone as an integral feature and we were told that in order to sell

Are these Nest products sold worldwide? I recently worked on a product that included a microphone as an integral feature and we were told that in order to sell it worldwide we had to include a physical disable switch for the microphone in order to be able to sell it in multiple countries. Even though nobody who ordered the product would ever disable the microphone. How does Google get around selling their devices without even announcing there is a microphone in it?