I've had problems streaming from my MacbookPro 16,1 -- just a few feet away. It worked fine until I updated to Big Sur.
As for useless, what I meant is that I don't use all the other features -- just the sound. I'd be happy to jailbreak it, possibly using other features or whatever it's capable of. The sound is amazing. You cannot, for example, stream to multiple brands and have it consistent -- like mixing a Sonos and HomePod for sound, it suffers from jitter. Sonos has proprietary algorithms. But for a single environment, the HomePod has really great sound.