Comment by herewulf

Likely they are trying to make said list of open-source software easily accessible. The vast majority of users are incapable of compiling their own software. Probably it's better (for users' freedom, privacy, and a healthy Android FOSS ecosystem) to have these users obtaining software through an F-Droid "app store" than through Google Play.

The goal that you suggest is interesting. It reminds me of Guix, where one can obtain binaries or one can build the entirety of packages oneself. All from the same system.

Perhaps you could share how you are currently building software from source and/or F-Droid?