It's really hard to figure out if these people are evil or incompetent or both.
Because on one hand, they could easily just be filled with hate and want to hurt people, but on the other hand, they still need healthy workers for their entire shitshow to function, so it seems like they may also just be incredibly stupid and not realize how much they're fucking their own economy by killing people. Reducing the size of the overall pool of workers doesn't bring wages down, it drives them up, because now workers have leverage since there are fewer of them to fill all the available jobs.
Even if they basically want to enslave people they still need them to be healthy enough to actually do the fucking work and to make more slave babies. My money is on they're more stupid than evil, but they're still evil, too.