What the hell are you talking about? Cantons? What cantons? Before you start shooting your mouth off, learn a thing or two about the history of the region. "Kosovars" don't exist -- much like "Palestinians." It isn't a nation, a people. There are Serbs (indigenous) and there are Albanians (illegal aliens / occupiers).
Regarding the fighting, the Serbs were only trying to defend themselves (learning a thing or two the hard way in 1941/2) and trying to prevent the sequel to WWII (which never really ended in Yugoslavia).
And yes, I know the history of the region.
A “Kosovar” is a resident of Kosovo. Most of them are ethnic Albanians, yes. But it's a useful concept if you reject the concept that every ethnic Albanian must be in Albania.
I'm sorry you don't like my point of view, but calling me stupid or imply I'm ignorant of the history. I've been watching this area since 1992, sadly.