you can take it up with lineage or e/OS on why it is enabled - android_device_leeco_s2/system.prop at f54cd7f286290e235d43f1bf29f0ff5e3f4c30dd · LineageOS/android_device_leeco_s2 · GitHub and advocate for flipping the boolean
last change is going back to 2018 with a larger refactor. Could be anything - if fluence is proprietary and the library got removed or is not included in the flashed vendor but thought to be present or copied over from device local partition… many reasons, I don’t know the s2