Canada & the Chinese Olympics

On CKNW radio this morning there was a guest who insisted that Canada should not boycott the Olympics in China. - Ok.
He said boycotts do not work and aren't effective. - Ok.
He insisted that we'd be better to engage China like neighbours rather than isolate and provoke them. - Ok.
He also maintained that we should be careful what action we take in regards to China because of the high numbers of Chinese immigrants in Canada. - What?

Am I the only one who thinks that sets a dangerous precedent? Should Canada really be beholden to the loyalties of our immigrant communities? Canada must be able to make foreign policy decisions in the best interests of Canada and Canadians. And these decisions have to be made independent of attachments, loyalties and allegiances that immigrant communities may have to their home countries. Of course, immigrants must have their voices heard like every Canadian, but they should be voicing concern for Canada and Canada's interests.
It would be alarming if we determined which human rights abuses are ok based on how large that ethnic population is in Canada. Is genocide, or torture or oppression acceptable if there's a lot of those nationals living in Canada?
I hope not.