This NY Times article describes the many uses of smart speakers that often aren’t taken advantage of – here’s an excerpt:
All the major smart speakers can connect to your phone and be used as a speakerphone. Even in the most well-wired offices, it’s often hard to be heard and understood on conference calls, and your smart speaker may be able to help. Using a HomePod, Google Home speaker, or Echo device as a speakerphone has two main advantages: It likely has a louder speaker than your smartphone and, often, an array of multiple microphones designed to pick up hard-to-hear speech from different angles of a room.
Each manufacturer has instructions on how to turn its smart speaker into a speakerphone (here they are for Apple’s HomePod, Google Home and Amazon’s Echo devices). Each device has its own way of connecting to your phone and contacts. Amazon Echo and Google Home speakers connect through their apps, while Apple iPhones can connect to HomePods over AirPlay or automatically just by holding it near the top of the speaker.
This might not be ideal in a large corporate setting, but for smaller offices or remote settings, having a multipurpose speaker that can be used for music and other tasks, as well as a conference call speakerphone other times might be just the ticket to beat the bad call quality that comes with other speakerphones.