[Solved?] Hide my contacts to AlienDalvik (instead of cloning ALL the SFOS contacts)?

[ric9k]

At least triplicated subject with:

How to disable Alien_Sync (showing SFOS contacts to Android apps)?

I would like to keep my main phone contacts away from Android apps. (Untrusted apps like WhatsApp should only see the Android contacts and be denied access to the rest.) How can I achieve that?