I'll let my tinfoil hat side run a bit.

Would this mean Google will be also profiling us by our soundsteps, voices, etc?

I would never buy hardware from Google, since that's a really bad idea, but I've been to houses were people actually use them, so it's not hard to assume Google already knows my footsteps and linked to my voice, which they probably know from using my own Android devices.

Each day I dislike Google more and more.