If they get the opposing player a red card, the rest of the match would be as a hockey power play. Ditto if they get an opposing player who already has one yellow card a second yellow card. But even if all it gets the flopper a free kick or even just possession of the ball, that's an advantage that the team can possibly capitalize on for a goal in what everyone ITT is complaining about is a very low scoring game in the first place.
I think somebody stepping on a land mine would show less agony than a soccer player.