This makes no sense.
"Decoupling science from the state" is just bullshit from "government icky, taxation is theft" morons.
No, governments should definitely fund scientific research. When it is public it is the only guarantee that it will benefit everyone. Scientific research done by private entities is kneecapped by their financial interests (and be very sure they will bury any advance that jeopardize their financial interests).
How are radio telescopes and mars rovers in my interest? How would you know what is in my interest? I worked for my money so the person in the best position to judge what is in my interest is me. I am sorry for you if that is such a hard concept to understand.