Is it inappropriate for sir paul mccartney  to play in quebec as part of the 400th anniversary celebrations?   stance: no:
Well, it is a very contentious issue. Much more touchy than most non-Canadians might think...
Yet, the French nationalists are not objecting to his performance based on artistic merit - where they would have a very good point - but on the basis of his nationality....when all he is really trying to do is just celebrate the history of an important place...
Frankly, I think the best way to celebrate Quebec City's 'birthday' wouold be to build a humongous statue to the father of Canada, General Wolfe, on the plains of Abraham!