It will be used as evidence that the person who has GrapheneOS on their phone is attempting to break the law. Telegram and Signal chats are often used as circumstantial evidence of malfeasance in Indian national security cases, so the jump to using GrapheneOS as evidence of malfesance is tiny.
> European authoritarians and their enablers in the media are misrepresenting GrapheneOS and even Pixel phones as if they're something for criminals. GrapheneOS is opposed to the mass surveillance police state these people want to impose on everyone.