You don't need a constitution to depose leaders, a popular revolution will do the trick. Also, an impeachment clause doesn't prevent fascism. Many supposed democracies see their leaders flout the constitution constantly without consequences.

Constitution aren't truths, they're collective lies we agreed upon. In Morocco, authority is a social contract that is bound by customs, not by a blind belief in the moral superiority of law.

An impeachment clause is only necessary when you believe that government is the ultimate authority. If Moroccans believed that, then yes, your argument about hereditary monarchy would make sense.

That's not the case. No-one believes in authority here; we only accept it. So we know that if the king loses legitimacy, a popular revolution will happen. And the king knows that, so he won't push the buttons too much either.