The myth perpetrated by the Canadians (not the government) was that the US planned to annex Canada and force Canadians to become American citizens.
Yes, the US failed to hold Canada long enough to force any of their terms, I was never denying that. Yes, the US lost the war because they failed in this mission. If you'd read earlier in the thread you'd see I completely agree that the US lost the war, as they failed in their war goals. You basically just restated my original argument before it got lost in wikipedia credibility debates and the like. I don't disagree with anything you're saying, except for the first paragraph which is an understandable misrepresentation of my argument, considering I got considerable off-topic halfway through explaining it.
I'm just stating that I'm not convinced (especially by that article) that the annexation of Canada/British North America was never the US goal, even if not one of the immediate ones/ones suggested by the US surrounding its declaration of war.
That's the only real disagreement from your post.
From that other section in the article I quoted and traced back to original sources, there are quite a few creditable historians that believe that annexation either became the US goal or was among them from start (including some Americans).
And in regards to wikipedia's credibility, I find it is most useful as a place to find some original academic sources (in the notes/references sections) on whatever topic is at hand.