The problem with non-techsavvy people is that they don't have an understanding of how seemingly innocuous data can be misused. My favorite counter to the "I have nothing to hide" argument is what happened during WW2 when the nazis used the consensus data of countries they invaded to hunt down their victims. People gave out this information because they had nothing to hide.

Another counter is what happened with the "anonymized" NYC data set. People discovered that combining two separate data sets can be used to reconstruct the information that was censored.

I have nothing to hide is a false statement that never made sense.