If you think you truly are user 1234567890 then you're sorely mistaken. Corporations have one thing in mind, and that is profit. They'll use your data however they see fit to maximise those profits. If that means identifying you, then so be it.

There is a reason phrase like microtargetting exists. When a political group is able to target individuals using their platform, that's not okay.

It gets worse though, government surveillance is one thing, it's another when Corporations give them full access to their data. Or did we forget Snowden already?