I wouldn't call myself an 'audiophile', as it's a very pretentious label, but I do like good quality sound. My 'main' hi-fi is a decent 'mid-range' set up; that I can stream to using a Bluesound Node (previous ancient Airport Express was too flaky and somewhat lacking in terms of it's onboard DAC). But the Homepods are fantastic for small room music, and having listened to them side by side with a number of alternatives, they are way above the competition imo. The level of bass coming from such a small unit, is astonishing, to the point it's actually switched off on one of them.
Siri isn't a problem exclusive to the Homepod. Tbh; I've never heard anyone else's Alexa/Google systems working very well either. Siri is adequate for the limited use I have for it (telling my Watch to turn lights on and off, or the heating on, really). And it seems the Spotify thing is Spotify's issue, not Apple's.