My rationale is available at Please provide this via F-Droid. · Issue #2 · Tadashi-Hikari/Sapphire · GitHub… However, note that the Android Versions do not rely on Google Play Services, so this should be easier for this than most.
Previously reported at [Android] F-Droid Repository · Issue #1455 · tagspaces/tagspaces · GitHub (presumably before tagspaces.discourse.group was used for feature requests).