GrapheneOS lies everywhere. This is from their forum. Those settings are implemented in DivestOS.

Another thing is that DivestOS does not recommend using MicroG.

https://discuss.grapheneos.org/d/8831-suggest-features-for-more-privacy
" GrapheneOS

    In app info, under "Mobile data and Wi-Fi, implement a large range of toggles(allow network, Mobile data, Background data, VPN data, unrestricted data usage) instead of only background data and Unrestricted data usage.

These toggles from LineageOS don't work correctly. DivestOS didn't include them. GrapheneOS won't be adding leaky features. Our Network toggle does not have leaks itself like these toggles. App communication allows apps to communicate within a profile which means you rely on apps enforcing the permission model. Our App Communication Scopes feature will provide the ability to control this within profiles rather than needing to split up apps via separate profiles."


 

 This post from GrapheneOS forum confirms that @MetropleX [GrapheneOS] ⚡🟣 lied above in his statement. Those people are 100% unreliable.