Yes, I'm sure there are a few libertarians so extreme as to be indistinguishable from anarchist. But they are a tiny minority.
In fact, his description of what a conservative is sounds much like typical libertarian positions:
Both libertarians and conservatives believe that only a free market can produce widespread prosperity: neither believe in vast coercive redistributive schemes which are self-defeating— the intended beneficiaries hardly benefit— and (libertarians believe) immoral. Both believe that people are entitled to whatever they can earn in a free market: that individuals should have the right, singly or incorporate groups to own, produce, buy, and sell whatever they wish, at whatever prices they can get and to hire whomever they wish, at whatever wages are acceptable, with a minimum (none for libertarians) of government regulation or monopoly. Both groups believe that economic freedom is essential not just to prosperity and efficience but also to individual freedom. "Liberals" make the government the star player.
I'm sorry, but I see many officeholders that call themselves "conservative" that do not believe in the principles outlined above. They support the current high levels of taxation. They support continued intrusiveness of the federal government, in the name of such monstrosties as the drug war.
Conservatives see the government as umpire, or rule-maker, -interpreter, and -enforcer. Libertarians feel that the game goes better without an umpire.
This is flat out not true. Libertarians completely understand the need for a system of courts and law enforcement. Some idealistic libertarians do believe that private alternatives would work better, but they also know that's an academic point until we get the government back to constitutional minimums. Many so-called "conservatives" seem mostly to have given up on getting that far, or even going in the right direction.
I read the first 4 or 5 paragraphs of this article and decided not to waste my time. This was obviously written by someone who has no clue as to what libertarian philosophy is about.
While I've met a few Libertarians who are reasonable, rational individuals who are genuinely interested in preserving our Constitutional republic, the majority I've spoken to, both in person and on this very forum, believe that 9/11/01 was a conspiracy by our government over oil, that we are NOT at war, that Afghanistan is either a dirty little police action or a conspiracy to A:) get Afghanistan's non-existant oil or B:) non-existant pipeline...that our post 9/11 actions would be unnecessary if we only pulled all US citizens and servicemen back onto US soil, close our borders and build a huge wall around the entire country...there's a libertarian on another thread right now who says the Bali bombing is a prelude to a US invasion of Indonesia...
I try hard not to paint groups with a broad brush, but some posters make it difficult...