I don’t understand what you’re saying. We don’t need to be getting into another situation like government schools, where even if you send your kid to private school, you still have to pay for public. If we decline fedfunds, we need to not pay that portion of our fedtaxes.
It will be a BIG THING for any state to peacefully be allowed to leave the Union and go on its own. This implies a long transition. If we can keep the process peaceful, the price will be a lot lower than that paid by those who suggested secession from Britain in the mid-1700’s. If all we have to pay is a double motor fuel tax for a decade, it is a bargain.