Agreed. They do have a nasty habit of dinging competitors to Apple apps, in the App Store.
It would not be a good thing, if they did that, here.
It would be interesting to see what they do with some of my packages.
I release alternative UI views, and Apple is infamous for wanting to force all developers into conforming to their UX.
It would make me sad, if they blocked things like these:
https://github.com/RiftValleySoftware/RVS_Spinner