Your example is a subjective question. Unlike the questions:
1) Does the individual have any additional mental health diagnosis or symptoms such as bipolar disorder, psychosis, neuro-developmental disorder, autism, personality disorder, somatoform disorder, impulse control disorders, substance misuse or disorder, eating disorder, or any diagnosis NOT listed as acceptable?
2) Any history of suicidal (or homicidal) ideation, attempt(s), or self-harm behavior (such as cutting) ever in their life?
3) Any history of an involuntary mental health or substance use evaluation (including involuntary transport) and/or court-ordered treatment?
And so on…YES or NO. Simple objective criteria. Any question that the Dr. can’t answer directly is answered by the treating physician's reports resulting in another YES or NO response.
Pilots are ALWAYS responsible for self-assessing fitness to fly, so saying applicants lie isn't really relevant to this discussion. Plenty of pilots are lying to avoid ever getting to this scrutiny or situation.