It's so disingenuous to think that the people who want to act in the best interest for Canada are treasonous to want annexation. Legitimately Canada's going down the shitter and its a quick and clean way out of the potentially irreversible damage Trudeau did. Not every morsel of land will be sovereign, nor is it treasonous to think that. Nationalism is not a concept of blindly following your country in whatever it does, it is acting first and thinking in the best interest and health of your nation.
Canada and Quebec are not gonna magically go away in the union, there are still different cultures, even national prides (see texas, louisiana) within states. Even Canadian soft-nationalists and other prominent anti-annexation factions are not enthusiastic about the crown, which is the only thing that historically justifies a Canadian nation. I get concerns over public healthcare (only now a problem due to mass immigration i assume, previously leafs could not stop talking about it), I can even get concerns for education. But to say it is in the best interest to continue propping up a shell of a country dead set on mass immigration (no matter what party you vote for) and corrupt practices in a objectively shit parliamentary system is really stupid. It leaves the free world open to attack because Canada has proven that it cannot defend itself against foreign disruption agents.
I'm not even the most enthused about manifest destiny overall. I just think integrating Canada into the union has more mutual benefits than Mexico or Greenland.