A young ruler mistakes cruelty for strength and answers a plea for mercy by threatening worse. He imagines that fear compounded will bind people tighter to his throne. The opposite is coming. Tyranny escalates because it cannot inspire loyalty, so it reaches for terror, and terror is the confession of a leader who has nothing else.
Strength does not need to promise scorpions. The man secure in his competence can afford to lighten a burden without losing his authority. Threaten those already straining under you, and you teach them they have nothing left to lose. People who have nothing left to lose will eventually walk away, or turn.