Lol, I saw the same thing when I hopped onto F-Droid.

I think the better options there are probably RetroArch or Lemuroid, which seem to be better maintained and can both use PPSSPP as the backend (though I think you need to add the libretro core for the emulator in RetroArch).

Hopefully their versions of PPSSPP are more up to date, but I'm not certain.

Edit: Actually best option seems to be the official site where they have a standalone APK, so you don't need to use Google Play (also, there's no difference between the "Gold" and regular version, it's just an option if you'd like to donate).