I'm not going to try to argue intent, others can no doubt do that better than me. The result, whether they wanted it or not, IS a 2 party system and has been almost right from the beginning. We've had 1 political party collapse (the Whigs) and be entirely replaced by Republicans who immediately became the second leg of the two party system. And it didn't happen at the Presidential level first, and no Libertarian Party, Constitution Party, or any other newfangled Party people dream up this time around is going to be even remotely competitive or make a single iota of difference.
So long as there is no opportunity for coalition government with multiple party's, there will be a 2 party system with both aiming for 50%+1 of the vote for the win.
And they were right. Political parties are divisive and allow a small faction of people to have control. The people are the losers.