There is a phenomenon that can be humorously termed the "traitor's paradox," which some may have heard of.
The stronger a country grows, the more its external enemies focus on unearthing and cultivating traitors, yielding greater benefits for the traitors. However, on the other hand, the traitorous acts of the traitors serve to weaken their nation.
Should the day come when the nation falls, the traitors will become just another road-side presence, utterly worthless.
The situation of the Luoshan Family does not entirely mirror this, but there are similarities, which can be summarized as another phenomenon, possibly called the "defector's paradox."
When is a defector within a group most valuable in the enemy's eyes? Certainly, when its strength is formidable and it remains concealed, it is most valuable, deserving considerable resource investment to sway.
