Yes they are, map mods without script atleast

The reason that mods are no longer supported on Android is because Google decided to prevent "third-party" (read: player-created) code from running on their devices. Jundroo had no control over this decision, and is not responsible for the inability to support mods on Android devices. This has been the case for several years now, and is quite unlikely to change.

(As for iOS, it never supported modding to begin with, for much the same reasons).

They haven't been possible even before i started playing, it was removed. Thats all there is to it. However, no one can accept it and paper ranks will ask anywho.