I've just had a game in a team match where my opponent, who is rated over 100 higher than me, blundered on his second move. So, he just resigned the game. In my opinion a very sly thing to do, as he doesn't lose any rating points. Seems a bit unfair to me that someone can just do this without any penalty.
In daily chess, there are a lot of timeouts that are not owed to a conscious decision. Some people sign up for too many games and can't handle them. Forfeiting lots of games unintentionally causes rating distortions.
And, believe it or not, some people are sandbaggers. Having games under 3 complete moves not rated is one way to attempt to make sandbagging a little harder.(You can't play two moves and say that you didn't know the game had started.)
There is the occasional problem like your game, but that is the exception.
I've just had a game in a team match where my opponent, who is rated over 100 higher than me, blundered on his second move. So, he just resigned the game. In my opinion a very sly thing to do, as he doesn't lose any rating points. Seems a bit unfair to me that someone can just do this without any penalty.