It's not like the "disliking to be deceitful" gene evolved to make its bearers lose the game.

For people who properly compartmentalize, it helps to win the game. By signalling dislike to deceit, they gain other people's trust... and then at the right moment they do something deceitful and (if they are well-calibrated) most likely profit from it..

It's the people in the valley of bad rationality who may lose the game when they realize all the consequences and connections, and try to tune their honesty up to eleven. (For example by telling their boss that they would be willing to quit the company if they had a better offer from somewhere else, and that they actually look at the available information about other companies.)