Half of those "security" features are at best useless and at worst more DRM features anyways. And yes, the firmware update mechanisms in android are abysmal in

Half of those "security" features are at best useless and at worst more DRM features anyways. And yes, the firmware update mechanisms in android are abysmal in general, but that this is slightly better in google phones doesn't mean that it is good anywhere. For the most part, lineageOS is on par with any random android vendor there. No better and no worse. For software updates, it is generally far better.