The article is about the failure of what boundless liberty leads to ,not liberty to argue
As the late Fulton Sheen says... boundless liberty leads to boundless tyranny. Uncontrolled freedom will always lead a person into slavery. The second alternative can be found in people who have no direction. Their fleeting desires change without there ever being an internal change of the soul, and they are unable to choose between the many attractions and temptations in life. But there is hope because there is a searching. Those who are empty can be filled, but people who are intoxicated with their own egos have no room for God.
Even in isolation man is never completely free, SFA. He is still subject to his environment and forces that are greater than he.
In any even a minuscule group or society, the pecking order established limits to liberty. Anarchy is untenable because it is unnatural.
As the late Fulton Sheen says... boundless liberty leads to boundless tyranny.
Of individuals in power only. And even then their tyranny is not boundless but will, in the worst case, expire with their life. Nothing human is boundless.