I can see libertarianism as self-centered if it's taken as "I only care about that which affects me directly", which is possible. It's fair to allow Art to take this in a negative fashion since I and others took his authoritarianism that way.
And I don't necessarily disagree that libertarianism isn't the best possible way to go. The biggest problem is that just about
any governing method can be good, with the right people. The "problem" part comes in when the "right people" are succeeded, as they always are, eventually, with the wrong people. Then, no matter what kind of government you've got, it'll suck hard. As I understand it, representative democracy has, historically, always been followed by tyranny. We're certainly headed that way, too.
Coming up with a form of government which doesn't have this weakness could be a good answer, if we had one.