My mother used to tell me "if you don't vote, you can't complain." When I was younger, I remember nodding in agreement. Now, as an avid nonvoter, I failure to understand her arguments. You could say I've "learned" less over the years if you consider such reasoning knowledge. But it's not.
The fallacy assumes defection is a practical option. If three people vote to go see a movie, and one of them offers no opinion, that person still chooses to see what the others decide. We all recognize if silent Carl goes to High School Musical 3 with his friends, he is in little position to complain about which movie to see. If he didn't want to see it, why did he go? The same could be said of those voters who went along with the decision. If they wanted to see Saw V, we would wonder why they followed the majority.
But our process isn't like seeing a movie. It's more like being trapped in a plane and people voting on the destination. If the choices are between Alaska and the Yukon, and the majority votes for Alaska, we can understand why the Yukoners complain. But we can also understand why those that like the tropics, and don't bother choosing between two bad choices, complain. We would only be surprised if the Alaskaners protested the result once we arrived.
It turns out those with the least credibility to complain are those that voted for the winner, which is usually most of the voters.