I read a post here a while back claiming that graphine is less private but somehow more secure. Of course the only person I have to ask is the graphine Matrix who claims are the opposite of this. Generally my main concern about Calyx is it’s Fake google play thing. Apparently this is less private than graphineOS’s sandboxed google play since it is still connecting to Google, and is just as privileged as Google play usually is.
It’s much more then just that they harden it even more and have great features like contact and storage scopes where apps only get access to what you give them and you can fully block apps from connecting to the Internet by denying the Internet permission at install those are just the privacy enhancements https://grapheneos.org/features for all they do to improve security