This question of /e/ continuing support even though Lineage has stopped has been answered previously as well.
/e/ is not dependent on Lineage support to continue with devices on its own list. Lineage depends on device maintainers who build and maintain ( fix errors) on devices. Once those maintainers move on, support is dropped by Lineage.
At /e/ builds are made using our build infrastructure. We do have a couple of device maintainers but their leaving does not stop the builds or support. Also defect fixes are done by a team of developers not the maintainers.
Security patches are also not dependent on Lineage. If a device is dropped by Lineage we will still download the patches and updated it for our builds. Every month around about the mid of the month the patches are applied. If for specific devices the patches are not applied or old pl let us know and we will have the build team apply them ( if they are available for download).
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