The Koch Bros are worried about their freedom to continue to dominate others and public policy decisions without the interference of a representational gov't that might just actually take into consideration the greater public good when it conflicts with the Koch Brothers' interests.
The greater public good ends at the tip of my nose, and six inches away from my wallet. All forms of evil have been engineered against humanity in the name of the greater public good. Millions of people have been exterminated in the name of the greater public good.
You're a part of that public. So, health concerns like food safety, pollution controls, disease prevention, etc are all issues you and your family shouldn't take so lightly.