Security and Privacy are not the same thing.
Stock Google is absolutely a hit to ones privacy, but LineageOS is a often big hit to device security.
If you don’t have a Pixel, and therefore can’t use GrapheneOS, check and see if your device is compatible with DivestOS.
However, neither will offer root support for reasons that both devs have decent write-ups explaining within each project’s documentation.
I do realize that not everyone places security above all other factors when deciding on their smartphone OS, but I think they should be aware of the trade-offs so they can make an informed decision.
The inability to relock the bootloader is gigantic security vulnerability. It negates, or entirely voids, a significant amount of a devices physical security, including FDE.
There are other security issues with LineageOS, but that’s part of the trade-off. There’s nothing inherently sinister or incompetent about that, it’s just the nature of the beast.
Regardless, I’m not here to chastise anyone’s choice of OS, or to even imply that there is a right, and wrong ROM, there isn’t.
I was just pointing out that there are pros and cons, and users should be aware of them when making those decisions.