You should read https://discuss.grapheneos.org/d/24134-devices-lacking-stand... about /e/ and also look at what they say about devices with strong privacy and security including but not limited to https://grapheneos.social/deck/@GrapheneOS/11635397373214317....

The AppStore has been like that for eons, but then again I don’t know a single person that uses it or checks the “content” posted there. It’s an utter waste of time.

I don’t think it will leak. After the U2 debacle, Apple might have learned not to push too hard on this front.