Exactly.

Britain's problem was the huge numbers from a single cultural group with very different lifestyles and values. Always a recipe for trouble.

France integrated Poles, Russians, Spaniards, Vietnamese, very well. Yes, they were required to francise their names, and in other ways become French, and they did. The problem was the ones who, in huge numbers, balked at becoming French, and that starts a vicious circle, as that group becomes known for not integrating, etc.

Canada did not have that problem so far because we have had waves of different groups, none large enough to create a  minority vs majority duality (our only such dualities are our original ones, Native vs "settlers", French vs English).