It turned out that genetic loyalty programming was very controversial in many parts of human space. People were deeply afraid of having their freedom robbed without even knowing it because their genes made them this way.
Abuse of this tech occurred in the past. Trisha was quite transparent about that as they walked past the dragon pit.
"During the Age of Conquest, a number of star nations rose up that stood out for their absurdly loyal populations. When other nations investigated, they eventually found out that the people who lived there were genetically instructed to give their loyalty to certain rulers."
"What happened once this became known?" Ves asked.
"The controversy generated near-universal indignation from other humans. The star nations in question were wiped out." Trisha straightforwardly answered. "The rulers were hunted down to the last man while the rest of the population were cleansed in its entirety."