No, no, NO! Here are much closer quotes (I rewound and watch that bit twice):

Sideshow Mel: Let us join our hands in song.

Sea Captain: Not with our warlike national anthem...

Sideshow Mel: But with that sweet and soothing hymn, the national anthem of Canada!

(Everyone sings an excerpt of Oh Canada, and make a maple leaf formation.)

Milhouse: I guess we've learned that war is not the answer.

Bart: Except to all of America's problems.

(The womenfolk were in the bleachers; Lisa waved a Quebec flag, Marge a Canadian flag.)

I was surprised and touched by it - I was expecting them to start making fun of Canada any second.

Marion