Samsung is removing several options from the Android recovery menu with the latest updates for Galaxy phones. Specifically, the update is removing:
Apply update from ADB
Apply update from SD card
Wipe cache partition
View recovery logs
Run graphics test
Run locale test
I am aware of the difference between recovery options and sideloading applications. :) I’ve installed/used LOS (and other ROMs) multiple times and I am a heavy user of F-Droid and its applications.
Just pointing out that this is just one more reason to avoid Android (saying this a Samsung user).