> But One-drive is essentially a mass-surveillance tool.

There are plenty of people that post clear positions on multiple social networks. I personally doubt that One-drive files will provide much more information for most of the people compared to what's already out there (including mobile phone location, credit card transactions, streaming services logs, etc.).

What I think the danger is for individual abuse. Someone "in power" wants one guy to have issues, they could check his One-drive for something.

Best is to make people aware of how it works and let them figure it out. There are so many options (local only, encrypted cloud storage, etc.) I doubt there is an ideal solution for everything.