I don't think points can be lost in games resigned within the first 3 moves?
sometimes people hit a wall playing too many games, and resing dozens or hundreds of games at once. sometimes it's caused by inexperience and they learn to never do it again. sometimes they're just jerks who do it over and over and over again.
sometimes, especially when the games are resigned early, it's a cheater with multiple accounts, farming points for his one account. see: User 285560
sometimes it's just someone bailing out of a new tournament round, not wanting more games.