I found that article informative...even as a Canadian.
I don't think the point of the article was that Americans dislike us....simply that many Americans barely know we exsist.
There is a hilarious show on the CBC (Canadian TV station) were Rick Mercer interviews Americans (general public, university professors, even staffers in state government buildings) about Canadians. He makes hilarious comments about outrageous things (we aren't on a 24hr clock like Americans, we are just getting a second zip code or electricity in our government buildings) and waits to see if anyone questions it. Also many congratulations were sent to our Prime Minister...Prime Minister TIM HORTON...(the name of a popular Canadian coffee shop) from spokes people for various heads of states.
I certainly don't hate Americans...I love travelling in the US!