Aldarion
Neoreactionary Monarchist
Think of it from their view, what're they going to do if they've won and sterilized everyone who believed their propaganda that the vaccination was necessary. How is making it so that the sole criteria for reproductive success is distrusting the system supposed to help the system?
Don't worry about their lack of slaves. They will always have more immigrants from Africa to import. A society where more than cca 10-25% of people are of different ethnic, let alone racial, persuasion, cannot function. So if the goal is a dysfunctional society, flash-immigration justified by something is a perfect solution.