For example he said that the Argentina squad was very old so this will be their last chance to secure a Gold Medal...Argentina won gold in 2004!!!
I didn't hear the quote, but I'd bet a 6 pack you have misunderstood what he said.
He wasn't saying that Argentina had never before won a gold.
He also wasn't saying that Argentina would never again win a gold.
He was simply saying that this team - meaning the core guys on the court, would not be around in 4 years to go for gold again, so, because of their age, this would be the last olympics at which they could win gold.
Seems legit, and is said all the time about many olympic athletes as they get into their later years.