Honestly, any of this unwritten rules **** always grinded my gears when it came to International cricket, or any other sport for that matter. I'm sorry, but regardless of similarities, there are huge cultural gaps between the Subcontinent, England, Carribean, etc, etc. and in such a multicultural environment the onus is on the rules makers to be as explicit as possible in what is and is not allowed, not leave it up to players themselves to sort out via "understanding" or "unwritten rules" how to govern the game.
I'm also consider myself somewhere on the ASD spectrum, so that may play into that, but lol you wouldn't want me captaining an international side, especially of Pakistan or a subcontinental team. I would have had my non strikers camp out at the middle of the wicket when batting if there was ever a contentious Mankading incident from my side when fielding, then dared my opponents to do the same, and been ready for a row about it too. And in my mind, it would 100% be on the administrators and rulemakers of the game that such an incident occurred and I would have no guilt.