CalyxOS is not hardened in any way and is in some ways less secure than stock AOSP. They are also on a hiatus and have discontinued updates: https://discuss.grapheneos.org/d/24791-departure-of-calyx-calyxos-leadership-and-discontinuation-of-calyxos-updates
LineageOS also significantly regresses security compared to barebones AOSP.
CalyxOS is not hardened in any way and is in some ways less secure than stock AOSP. They are also on a hiatus and have discontinued updates: https://discuss.grapheneos.org/d/24791-departure-of-calyx-calyxos-leadership-and-discontinuation-of-calyxos-updates