It is interesting how few languages HomePod supports compared to Siri on other devices (which at least as of a couple years ago had a lot compared to Alexa or even Google Home). Maybe the rather low amount of RAM and flash on the HomePods has something to do with it; granted that the bulk of the processing happens on Apple's servers, some of it has to be local; at the very least, recognizing the language equivalent of "hey Siri". Getting that right enough to minimize false activations in a lot of languages may be tough with the limited resources on the HomePod.