Big L Libertarians in the US go hard on Austrian economics. As a result, if you ask Americans what they think of libertarianism (as you suggest), they’ll mostly be thinking about adherents to Mises & Cato.

>If a group wants to organize a non property right town or city or country, that’s fine by libertarians.

https://newrepublic.com/article/159662/libertarian-walks-int...

> What you are talking about is more Austrian economics.

No, it's just the what libertarianism means 99 times out of a 100 when talking on HN or well, just Americans in general.