Privacy is hard these days. Tech companies want to know everything about you to show more and more advertisement, or to sell the data to the third parties, who then resell to the next ones, then further, until a a toy vendor knows more about your kids, than you do.
The app permission systems, that became popular with Android and iOS are a godsend. Now your bookreader app does not know your location, who your friends are, and can’t upload your private photos to their servers as a part of “analytics telemetry”.
Microsoft introduced a similar system with Windows 8 for the apps installed from the Microsoft Store, and expanded it in Windows 10 to any app packaged in a special way. So when you install an app from Store, you can be reasonably sure, that it does only what it is supposed to, right? Not so fast!