Canadian Stereotypes and Politeness
Even if it is not totally accurate, the widespread international impression that Canadians are overly courteous, if not outrageously so, nevertheless influences how Canadians interact with one another. It might at most function as a positive feedback loop.
In reality, many Canadians, especially those from more affluent families, take extremely seriously the notion that they should apologize frequently or only make very indirect, oblique requests. The idea that a stereotypically "good" Canadian avoids excessive self-promotion and boasting and instead exudes humility and even a little self-deprecation is also pretty widespread. Another common stereotype of Canadians is that they are quick to "defer to authority" or blindly follow orders from superiors. However, in recent years, this stereotype has evolved more into a theory of Canadian politics and history than into a practical, everyday principle of life (as discussed in the section above on roles and formalities).
Ultimately, stereotypes are essentially unfair generalizations, as is obvious. Since each Canadian is ultimately an individual, he or she will probably have his or her own particular viewpoint on what it means to be a nice and civilized person. And regrettably, a sizable portion of Canadians will always be indifferent.