A bio weapon that did not target those most likely to pose a threat to any military action would be rather useless.
You are missing the big picture—this is not a science fiction “target one group with a bioweapon” stuff.
This is “flatten the curve”, the population curve stuff.
Any population. Any which way they can.
Save the planet because there are too many people stuff.
https://www.worldometers.info/world-population/
The fascist elites want more “breathing space” in their dystopian future.