Originally Posted by norenxaq
fk: a person can declare himself king regardless of lineage
Declaring yourself king and being king are two different things.
Back in the day when kings were over thrown by others, if you had a big enough army behind you and some political support that worked. In modern times you may be able to seize control but you'd be called a dictator, not king. No matter what title you decided to give yourself personally.
If any monarchy would be restored in modern times, there would have to be some cultural/historical link to the past. That's the point of restoring that system. Picking some random person and calling them king does little.
In an Arab country, trying to install a Pharaoh in modern times? Not going to happen. Even if they could try and track some heir down.
Now restoring the Egyptian kings? Highly unlikely still (there is a very rare country where restoring a monarchy might be possible) but at least more plausible then a pharaoh.
Faud II still lives, the last Muslim King of Egypt. He and his line would be far more likely to be restored then some resurrected Pharaoh. But I don't see either happening.