The point of "The entire history of you" was not to be wary of people who lie or cheat. It was to show how different people might react to the power of this kin

The point of "The entire history of you" was not to be wary of people who lie or cheat. It was to show how different people might react to the power of this kind of technology. Some people would use it benignly, some people would choose to go without it, some people would choose to use it to live in their past while shutting out the present, others, I.e. the cheated on man would choose to use it to blackmail, torture and destroy others around them. It's not a story about the perils of cheating on a partner, but falling under the influence of powerful technology either directly or indirectly via those around you.