Facial recognition systems do get information about the names, addresses, etc for people passing thru specific airports. Knowing that I’ve been thru 23 airports (and when), but never have been in the thousands and thousands of others, helps those systems narrow down the facial signatures.
It seems to me that knowing a friend was blonde, wears glasses, and would be found in photos in 500 houses (but not the other 50,000) would provide valuable data to the algorithm generation process. Or, knowing that hundreds and hundreds of homes have a specific make and model oven should help Sense determine the pattern for that oven more quickly. MUCH bigger data sample and far more events to work against.
As others have noted, Sense Support (and engineering) did ask me about specific devices manufacturers and model numbers. That was part of how they determined that my “noisy” device adversely affecting all device detection in my home was the Franklin Electric SubDrive75 variable frequency 3 phase synchronous motor in my constant pressure geothermal deep well pump. So, now they know what one looks like, even though they haven’t been able to teach Sense how to deal with it.