I was likewise embarrassed/offended watching the post-match interview with Sampaoli (Chile's DT). All of the questions were nice enough, but then an Argentine reporter stands up and says "We Argentines all take pride in this since you're Argentine..." So what... the guy's from Arg, but it's Chile's victory!
Is there nothing some Argentines don't want to co-opt? Just let the Chileans have their moment in the sun for crissakes. Argentine exceptionalism at its finest.