GoKawiiliOS 27.2 lets HomePod serve as Mac's default wireless speaker
Apple's 27.2 software update for HomePod 2nd generation and HomePod mini 2 adds the ability to set them as the default system audio output for Macs with Wi-Fi 6E support. The update also significantly cuts wireless audio latency, and adds features like Sound Glow, Lock Controls, and home theater surround sound support.