What's interesting about the left's obsession with Vietnam...which they consider one of their greatest successes, is that they still lost. While we may have left 'Nam, the political advantage they sought...and still seek today, was a failure.
Nixon was still elected twice with everything they threw at him, and if not for Watergate, another Republican may have followed. The fact that they continue down this path is just another indication of their neurosis.
You are 100% correct.