Why does it need to be fixed? The mission of wikimedia is to serve educational content.
Edit: this is a bit unfair, if its a specific app they should be convinced to cache just to avoid unfair resource usage, but hotlinking in general should not be seen as a problem
Edit: this is a bit unfair, if its a specific app they should be convinced to cache just to avoid unfair resource usage, but hotlinking in general should not be seen as a problem