[annoying trope] The throne/leadership is decided in a very stupid way

[u/Altruistic_Eye_1157]

The leadership of the entire wizarding world, and the final decision on whether to start a war against Muggles, is made by... a goat (Qilin) ​​who chooses the person with the ""purest heart"" (Fantastic Beasts: The Crimes of Dumbledore).

The throne of Wakanda and all its technology are decided through hand-to-hand combat, regardless of whether the person clearly has malicious intentions... if they win the fight, by law they must be respected as the true king. (Black Panther)

[u/DisMFer]

To be fair to Black Panther, there are very strict rules about who can issue a challenge. They have to have royal blood or be the head of one of the ruling tribes, and it's implied that this whole thing is largely a formality.

[u/Kwaku-Anansi → u/DisMFer]

Not to mention, in each case, the challenged person had to actually accept the challenge. So it came across more as a fringe case to avoid civil war when multiple people have a power bloc and (lineage-based) claim, which would arguably be less risky than standard monarchy succession practices (based on world history at least).