Many permissions like that are used in ways a typical user doesn't expect. Companies will explain it away by saying you agreed to it in the terms of service, although it's generally acknowledged that almost nobody reads or understands those terms for any company. For example, most people don't realize that when you give an app read access to your photos, it probably will scan every single one of them for data and upload it to the app's maker. Practices like this are so common that I don't even think the developers understand that they're abusing users' trust.