both leaders here keep talking about how we Canadians fought hand in hand in , took in Americans in 9/11 etc.

I agree they are all saying this, but I sense a difference in intent between Poilievre and the rest.

Maybe it's my bias, but I feel that Poilievre is saying these things with the intent to convince the Americans - i.e., it's for the American audience. By contrast, Carney and others are saying these things more for the Canadian audience - to explain why it's justified to be angry at the Americans and we need to grow up and kick them to the curb.

For Carney and others, it's a rallying cry; for Poilievre it's an attempt at appeasement.