I think what he was referring to was the deliberate policy of encouraging Anglosaxon immigration over all others. For example, Canada had a Chinese Head Tax to curb immigration from 1885, riots against Chinese in 1900s and a full Chinese Exclusion Act from 1923 to 1947. While this status is not particularly different from the Americans (one can argue that the US' own Indian boarding schools were equally horrifying), the hypocrisy elsewhere was astounding. During all this time British immigration was always given privileged status and this continued well into the 20th century. Clifford Sifton, Minister of the Interior from 1896 to 1905 deliberately encouraged, through advertising campaigns, immigration from Anglosaxon Britain and US to settle the Canadian West, and the Anglican Church was sent to encourage "British values" even among other European ethnicities who migrated. In terms of ethnocentrism, the Canadians came close to the White Australia policy in its economic absurdity and unfairness. Maybe the new Canadian policy has improved things somewhat (and I do not agree with the suggestion that the situation is better in the US) but is it really praiseworthy? I would argue that allowing other cultures to sprout around Canada has not changed either the Anglo-Canadian or Franco-Canadian self-perceptions as the "true" Canadians to the exclusion of the other and all else.