but it certainly caught attention because it was an effective way to articulate the “Anglosphere” anxiety about being fractured and overpowered by local political and economic forces.

It like the EU were about standing against American Imperialism. Harper was the leader in the early 2010s, and even you can figure out the flaw in your own logic when you think as a response to Brexit Canada was looking to unite the anglosphere by joining the EU.

https://thecanadianencyclopedia.ca/en/article/dominion

"Dominion of Canada is the country’s formal title, though it is rarely used."

I assume you also should know that United Mexican States is the proper title for Mexico and United States of America is the full name for USA.

Are you really going to suggest that the need to address a purported distance between these “culturally similar” countries was endorsed by neoliberal parties closely aligned with the US

Historically similar not culturally, Canada's the only French nation in that for instance. Also Canada isn't neoliberal, that's all forced on us by the oppressor. We're quite happy not having money but sharing in the environment and looking after each other.

CANZUK is a neoliberal and imperialist campaign that seeks to reassert some sort of common settler identity through formal agreements

In it's entirety it was to pull away from the US.

You have to lie about its importance to create the narrative that it was a sign of how Canadians were oppositional to the U

Our entire history has been opposition to the US, even confederation served that purpose. How can you say you ever opposed the US and be under such disillusion as to think it's recent?

At this very moment you are acting as though Canada is not subordinated to the US while trying to act like Canadians widely recognized that subordination before the current tensions. I don’t think you really understand what you’re saying.

Yes we're under their thumb, Carney campaigned on getting us out of it. Trump is combatitive enough to let it happen and obviously this has been known about before current tensions. As I said, Biden was worse for Canada and as you said " It’s been an idea that’s kicked around for decades". So we're clearly both in agreement that this isn't some randomly new notion. Ask anyone who traveled to Cuba why, they will also say "no Americans" so what are you even trying to prove?