Readers are taking her piece to be contrary (to the multiculturalism invoked by many Canadians) because of what she wrote right here:

"I can’t recall what it was that was done differently back home in China, but I do remember the oldest of the group replying, “But we’re in Canada now.” It was a wise acknowledgment that the choice we had made to adopt Canada as our new home necessitated some changes on our part, too. It would be a lost opportunity to live the same life we had left in different location."

See, thing is, lots of Canadians, including some politicians and political activists, take multiculturalism to mean Canada has to adapt and accommodate to an extreme degree to recreate the wanted environs of every ethic group coming here.

Her piece pushes back against that agenda. And a lot of people are applauding that push-back, because plenty of Canadians think that if you want to live exactly like you were in "foreign country X", you ought to just stay there and not come here.