I don't think anyone really says it's an hostile act but both countries, Canada and the US will have to decide what it means for their ongoing relationship.
Canada is free to get closer to Europe and the US is free to be displeased about it.
Maybe it works out well for Canada or maybe it doesn't.
> Makes it all the more obvious that USA is Canada's abusive partner
Why anthropomorphize geopolitics?
This is just just a big fish throwing its weight around like all big fishes do. Russia does it with its neighbors, China does it as well and India and Europe are not shy about it either.
It's just the name of the game and its been happening since the dawn of time.
Some states use force, others bribe or cajole but in the end they all try to influence their neighbors in a way that suits their interests especially if these neighbors are smaller in terms of population/economy/military etc...
The fact that so many people are shocked by such news these days is because everyone drank the cool aid of the End of History and forgot that spheres of influence still exists and that the rule of law was nothing more than gentleman's agreement that could be thrown out of the window at a moment's notice without second thoughts.