It seems that indeed Firebase adds the AD_ID dependency (as noted here: 🐛 [firebase-config] Unknown permission `com.google.android.gms.permission.AD_ID` · Issue #9237 · firebase/flutterfire · GitHub and elsewhere).
Following migration from expo-firebase-analytics to React Native Firebase the AD_ID is still there.
I added it manually to blockedPermissions, which made it disappear for Android.
How can it be blocked in the iOS build?
There’s an explanation here: Analytics | React Native Firebase but I’m not sure how to apply this for a managed EAS build
This was asked before, but not answered (yet): How to modify Podfile in an Managed workflow?