And it does a lot of these things very poorly compared to the alternatives.
I am pretty entrenched in the Apple ecosystem: Mac, iPhone, Watch, AirPods, etc. but the one place I stray is music and speakers. I subscribe to Spotify for the vastly better music discovery (I tried Apple Music for the trial, maybe it's become better, but Spotify gives me multiple personalised playlists each week and a selection of personalised daily mixes - it's hard to beat), have Sonos speakers and a Google Home.
Google Assistant is better even at the simple things: it can set multiple timers, which Siri can't do. It can have a conversation with me, when asking about the weather you can reply with a 'what about in Birmingham?', something Siri can't do. Google Assistant can play songs from Google Play and Spotify, radio from TuneIn, whilst Siri is limited to Apple Music - fine if you're a subscriber, extremely limited if you're not.
Google's attitude to privacy is a genuine concern, but that can't be the biggest selling point for Siri. It has to be able to stand on its own. It's disappointing, because the HomePod looks like some stellar hardware.