You have been installing themes and other things in `$XDG_CONFIG_HOME` directory like `ROFI_DIR="$HOME/.config/rofi"` (in `.config`), but fonts installed in `.local/shares/fonts`. I think that should be improved because this path is obsolete now for many applications, even `fc-cache` prefers `$XDG_DATA_HOME` (@see `/etc/fonts/fonts.conf` for more information).
Also, I added `-r, --really-force erase all existing caches, then rescan` argument, to verify the cache to be cleaned.