No. That’s anarchism and only the most intransigent ideological wings of it at that. That in no way describes libertarianism as originally outlined. It was about maximizing social freedom. As well as public ownership of natural resources. Something right wing Libertarians abhor in practice.
And no there is not a no true Scotsman conundrum when it comes to right wing libertarianism. You cannot be both capitalist and actually libertarian. Capitalists and right wing libertarians reject public ownership of natural resources. And have replaced freedom. With an imaginary concept of personal freedom. No freedom is personal. Freedom belongs to everyone or it isn’t freedom. If it belongs to you personally, it’s called privilege. And if something is a freedom. And anyone is unable to access it. Then they are being denied their freedoms. It’s a basic core incompatibility.