(Nolancompoopy disclaimer
)
I thought that fit perfectly. It further backs my point about them. Cap was part of what America was and didn't understand what it had become. And based on what he'd known, was realistically making naive assumptions about a country that doesn't exist that way anymore. Stark, representing the current America, knew what Fury was up to, knew there were ulterior motives and from what I got, wasn't so much insulting Cap as trying to give him a wake-up call that the past he so desperately clings to is long dead.
It's also one of the reasons why I really want to see Cap address our current state of war and the new enemy. I think that type of situation would help build the character and provide a better wake-up call than Stark did, so he's not running around like an antiquated hero anymore. If the modern audience can't identify with Cap, there's no way Marvel will be able to successfully sell him as the leader of the Avengers.