I'd love to my make my home smarter, I wish Google would put some effort into making it possible for me to tell my phone to play for example heat on Netflix in my livingroom and bam, there it is.
IIRC there was a video on Google's last presentation of a family where a kid used the assistant to do this kind of thing with a Chromecast and he was talking to a speaker in the room.
For a true "Assistant" experience, they'll probably want you to use a Google Home device instead. That's the true Alexa competitor.