What did Argentina head coach Scaloni mean by calling Messi and teammates 'Indians'?

Argentina head coach Lionel Scaloni called Lionel Messi and his teammates 'Indios (Indians)', after their World Cup semi-final win. "They grew up in environments where they weren't afraid of anything," he explained, adding, "Responsibility doesn't weigh them down." The Spanish term refers to indigenous peoples of Americas, not citizens of India, and portrayed his players as fearless warriors.