I personally think it that is backwards or at least a feedback loop. The technology shapes the society. Horses of all things could be accurately called ancient corruptors of human morals as absurd as it sounds.
They were expensive but fast enabling and encouraging raiding of neighbors and riding away before they could rally a defense with far less risk for the reward compared to a band on foot with melee or ranged weaponry who would get beaten or cut down and either enslaved or executed if they attacked a village on their own.
It may have been existing flawed morals to consider raiding then but the power influenced them.
Horses didn't cause raiding. Horses were domesticated on the Eurasian Steppe around 3000 BC, but people in conflict, including hit-and-run raids, are known from around the world and long before then, including in the Americas where no riding animals were known until the Columbian exchange.
Horses didn't cause cavalry, horses were domesticated and bred with their modern properties because people wanted cavalry. The tool reflects the creator.
They were expensive but fast enabling and encouraging raiding of neighbors and riding away before they could rally a defense with far less risk for the reward compared to a band on foot with melee or ranged weaponry who would get beaten or cut down and either enslaved or executed if they attacked a village on their own.
It may have been existing flawed morals to consider raiding then but the power influenced them.