@simon honestly—not sure, but with this info you can get a rough idea of family numbers, smart home devices, toys, games, tv.
if metrics are collected by any devices, then it’s a reasonably vivid picture of a lot of households
Could be used for R&D, marketing, profiling, advertiser interest intent. None of which being illegal information to gather.
As we know, plenty of TVs track what you watch/listen to, so doesn’t seem overly far fetched that more surveillance is in use for “metadata”