I had no idea that Apple even allowed apps to do this in the first place. I guess I was pretty naive and trusted them to do the right thing.
Since the Facebook controversy and looking into GDPR, here in Europe, I'm really shocked as to how much our data is unprotected and used for all sorts of reason, without our direct consent being given.
I hope that Apple really doubles down on privacy with iOS 12 and makes it its key feature. Here's hoping.