FDroid focus is freedom, not convenience. We try to make the experience for all (devs, users, fdroid staff) as pleasant as possible, but we still have quite some miles to walk. Play-services is used for important functions, indeed. Most of them should be free, but Google decided to put those functionality into a non-free addon, not the base system. A pity, indeed. I can see the points of using it, so while I disagree with this point, I can still see the value and don’t want to tell you, if you should be using it or not.

However, you want the app to stop reporting. As I pointed out, removing the app wont stop the existing user base, so the only way (again, we cannot remotly remove apps. we don’t even have a way to alert users of a specific app — a functionality i’d love to have in fdroid) to do this is to supply another build of the app with reporting removed. For that purpose i told you the last version we were able to build.

“Tainted” is used here in the same sense as using proprietary drivers in linux “taints” the kernel. So this actually a quite common wording.

Anti-Feature: We don’t have a problem with IAP. Actually we’d love to see more options to get the developer some financial support, but we have a problem with non-free dependencies.

On a side note: Neither users nor staff upload apps, they get build from source.