"Oh Agent Starling, you think you can dissect me with this blunt little tool?"
Look, I think they're useful as a general idea, though I'd never use them to tell me anything concrete, even with the caveat that all people in the situation are acting honestly.
I'm just most interested in the companies who require the tests as part of their onboarding. If me taking the test is a prerequisite for me working there, what does that say about your organization?