The last HomePods sounded great, but it’s hard for me to imagine them taking off without fixing Siri. Siri is still remarkably dumb compared to Alexa and certainly when compared to GPT3.5 tools. If you ask Siri “What is 220°C in F” it will correctly hear the words you’re saying, then convert 220F to C.
Because of this, I never use Siri outside of contexts I’m sure Apple has tested thoroughly (e.g. read my last text).