Remember that your apps even if you use different profiles see the same IDs.

For instance data broker easly can connect them with you.

*Using GrapheneOS you're like a beacon on the ocean.*

Additionally GrapheneOS harvests data about you. 
They encourage you to use their servers on purpose. They don't have even an option to hide your real IP for instance updating OS, clock etc. via Tor.

They don't have .onion site.

GrapheneOS can be next CryptoAG. 

 Could you upload a screenshot of this feature in GrapheneOS - I can't find it.

I only found Network permission.

>>Network Restriction: DivestOS already lets you restrict network for each app by connection type (cellular/Wi-Fi/VPN), when in the background, and optionally completely revoke NETWORK permission.

>Yes GrapheneOS has the exact same functionality, DivestOS Network toggle is the exact same developed by GrapheneOS.