Rereading the post in question, I'm not so sure that I'd be afraid of "theft of my personal data" so much as "a plan for theft of my personal possessions." A map of my house with an inventory of my possessions would mean a lot to thieves who wanted to hit targets quickly and optimize their spree for a value-to-weight ratio. That kind of data could make organized burglary very profitable.

Is it theft? Do I stop having my data after they’re gone?