In response to suggestions by a lunatic in the US Oval Office, Green Party Canada’s leader Elizabeth May suggested Canada should invite western states Washington, Oregon and California join B.C and split from Canada to form the ‘Cascadia’ eco-state.
(Note this article is from Jan 8, 2025 and Elizabeth May has since become co-leader of the party alongside Jonathan Pedneault).
Note the idea was joining Canada as-is, or forming a “Cascadia”. I think the latter is much much less realistic myself :)
I sure as heck wouldn’t want B.C. or any Canadian province to split off from Canada.
EDIT: I think you’re absolutely correct that separatists ignore their own region’s dependencies on the parent state. Quebec, for example. The separatists there always hand-wave away the question of how they would deal with losing access to the rest of Canada’s resources (physical, cultural, economic and political).