Well most of all because their papers are focused on dishonesty and how to nudge people towards being honest.
“It takes one to recognize one…” or however that saying goes. Or another one is how people study their own affliction: a common occurrence in psychology from what I hear.
Why is that amazing?
It's just the default go to. These people don't reach these positions by being honest and admitting their mistakes.
They do it by playing these kinds of games.