I didn’t detect any tone of moral superiority in this article. He merely pointed out a number of differences between the two countries that may explain why political discourse has evolved differently in each country. For example the emphasis on individual liberty that he mentions in the USA means that there is greater protection for Free Speech as opposed to Canada. Most would think this is a good thing. The flip side is the penalties for, as an example,  denying the holocost are less in the USA than they are in countries like Canada and Germany. Similarly, as any marketer will tell you, there are products that one can profitably develop for niche markets in the USA that are unprofitable in Canada, given that those niches are a tenth of the size in Canada. No value judgements are involved.