So was the singer from Fargo, MN? Or was that an intentional over doing of the "Wisconsin accent" that in reality like .01% of the population actually has?

Well, for one thing, it wasn't a Wisconsin accent that she had. I actually thought it sounded more like a Canadian, but it also reminded me of a "UP" accent my friends used to do as a joke. Surely enough, she referred to herself as a "UPer" or "Yooper", meaning she's from the Upper Peninsula of Michigan. Whether or not the accent is faked, I have no idea. As for an actual Wisconsin accent, I would guess that about 25% of the residents speak in a way that would sound, to many of us, like they are doing a fake accent, only they aren't. People are on tv from WI or MN and you can totally hear it and it makes me question if we all sound like that sometimes. Additionally, I'd guess about 90% of us speak in a way that is decidedly midwestern-sounding to people from elsewhere. It's not fargo-esque, but it's definitely there. That said, I find it annoying that it's generally exaggerated, but that's probably true for a lot of accents or pseudo-accents. But back to the video. Not too bad for an internet video. I liked the mirrored part with the heavy guy dancing. Though the whole video did dredge up some familiar feelings of dislike I have for a great many Packer fan antics and attitudes.

So this is a little off topic, but why is phobia for the fear of long words Hippopotomonstrosesquippedaliophobia?

Because it's basically a made up word, created to be long for humor purposes.