In a minarchy, the only justifiable government institutions are armies, police, courts and legislatures, for the purposes of protecting citizens from external attack, from local crime, to determine innocence or guilt, and to determine the proper application of property rights in new areas.
It’s not?
Minarchism is the political philosophy that advocates the minimum government necessary to ensure social order. In general, minarchists support government providing a legal system including police and judges. Beyond this, there is often disagreement about what the government's minimal role should be, with some including roads and natural resources, but others holding only to police and a court system.
Conservapedia didn't waste anymore space on it because there isn't any agreement on what it is. What you are listing is VERY basic and leads to anarchy.
You’re arguing with people who do not really believe in the founding thesis of this country. They try to wrap themselves in the Constitution but their views have no real relation to it.
They just want to replace the current authoritarian regime with a different authoritarian regime. Their utopian version would be just as coercive as the current regime. No net benefit.