So if one piece of data is so valueless...
why is it so hard to opt out of data collection?
cf. Supercookies, ignoring "Do not track" settings, opposition to Ad and script blockers.
Multiple tick boxes needed to opt out of (or maybe opt into? who can tell) data collection with triple negatives and auto-re/un-ticking on page refresh.
Companies used to rely on freely given information from "representative" samples, via surveys etc.
Now they just want all the data , even from those that wouldn't have completed the survey because they don't see why they should give their life story to the company they just bought a fridge from.
And they go to great lengths to get that information, in many cases against the laws of the countries they operate in (e.g opt in vs opt out).