The example of treason (traitors) vs. little white lies was just to illustrate that there are varying levels of wrongdoing acted out by people who are "untrustworthy."
A traitor is a person who has been found guilty of the crime of treason. This is the type of treason that has the death penalty in America.
One who betrays a friend is also a traitor. But this type of traitor doesn't hang unless they do it themselves.
I guess we could consider the regular actions of people screwing over other people they don't even know, so they can get off, as traitors.
But this has nothing to do with my saying that Justin is untrustworthy. The example was to show that your statement that every untrustworthy person should be treated the same isn't right. The contrast between the traitor and white liar shows there IS a difference and not everyone who is simply "untrustworthy" deserves the same punishment.