Agreed!
But Mullahs are the seed from where Islamist government sprouts. Look at Saudi and Iran. Where Mullah, Allah, and 2-bit politiko princes or (prince-wanna-bees) collude to push the countries into subhuman living.
Cave is a metaphor to show the mindset of Islamists. And the destination of any nation that follows the deadly path.
Now if you can bring Khilafet without Mullahs, then you must be thinking about 21st century European systems (and not the true blue Khilafaet Rashida)..