It's not exactly surprising as right-libertarian is a paradoxical concept. It only works if you're loaded. No actual poor person could possibly ever be considered at liberty seeing as money dictates access.
I would disagree on this point, being a "right"-libertarian from a low-income family, but I will happily concede that this differs from person to person, situation to situation. Libertarianism promotes and empowers the individual over the collective, and most libertarians derive their values from this ideological position. I'm not sure if you are familiar with any libertarians in your personal life, but many are deeply caring, rational individuals who have a consistent framework of ideals and strongly held beliefs against the use or threat of violence toward others. I would encourage you to engage with us more before you dismiss us, and I think you'd be pleasantly surprised :)
Disclaimer: Am fairly solidly left-libertarian (the original source of the word)
Collective action is the only thing that can ever empower the individual. We're standing on the soldiers of giants. It's as a collective that humans have developed all the technology that you see. It's thanks to FOSS that I and many HN visitors can earn our livings and contribute further to society. If you want to be egotistical and think you don't exist as part of a complex eco-system that both sustains and enables you through more than just economic exchanges you are free to do so but do expect to be challenged on it frequently. This message was delivered to you via the world wide web after all, which would be impossible in a right-libertarian world.