It would take less than 5 minutes of research to learn that it was not just about low taxes. Also cherry picking one country on there does nothing to disprove the notion that in general countries with higher economic freedom have higher economic growth. I don't think they are trying to say it is the one and only factor as that would be ridiculous. If it were purely ideological the list would look nothing like that anyway so I don't see why people are getting bent out of shape.