Earlier quoted context omitted.
By that framing you are saying that Toronto, Montreal, and Vancouver should also all seek secession. Likewise, you could say that NYC and LA should singularly secede from America by that same logic. It doesn't track. There is no legal precedent. Alberta as an entity did not exist beyond Canada.
> There is no legal precedent. Legal precedent doesn't really matter here. If Alberta wants to leave and they're willing to fight a war over it, then that's up to them. USA already went through this once.
U.S.A. ''life, liberty, and the pursuit of happiness''
Canada ''peace, order, and good government''
Those are fundamental to the identity of each nation's people. Are they core beliefs of the majority of their citizens? Probably. Are Canadians ready to fight a civil war over Alberta separatism? Not at this point, even slightly.