When you can get two Sonos Ones for the price of a HomePod... Ignoring the smartness for a second, a stereo pair of Ones is going to objectively sound significantly better than a single HomePod, and most of the good reviews basically say that the HomePod sound quality is great, but given all the shortcomings (including the price, and how closed it is) it's not high on the recommendations list.
I'm a super Apple fan, but I think it's easy to get carried away with the imaginary "OMG the sound quality is AMAZING" when in reality, I very much doubt that anyone would be able to tell the difference in a blind comparison, especially if you weren't listening to them side by side / one after the other.
It's a really fascinating product, and fascinating to see it all unfold. Once AirPlay2 comes it will be in a slightly better position to compete, although the price is still high, and Siri remains rubbish. Speaking of rubbish, here's another pretty funny Siri interaction:
https://twitter.com/gruber/status/963843284794793984?lang=en-gb