My AME opinion (though not yet HIMS trained)….
Here is the FAA’s perspective (not saying I agree or disagree with their perspective and approach, just explaining what I have observed):
1 The doctors at the FAA want to keep our skies as safe as possible and distracted and/or impulsive pilots can make the skies less safe.
2 The doctors at the FAA apply policies and approaches as consistently as possible to screen for risk in the full population of potential pilots. They are trying to achieve what is called in medicine high sensitivity (don’t miss anyone with the condition) though it usually comes with some compromise in specificity (some people who don’t have it will be falsely labeled as having it). This may be where the perceived “hate” comes in because it makes some healthy pilots jump through time consuming and expensive hoops.
3 The doctors at the FAA are willing to consider pilots with the past or current diagnosis of ADHD (whether the diagnosis was given appropriately or not) who are off of medication for at least 90 days (though 6 months is better) if they demonstrate adequate focus and attention. To determine this adequacy, they review medical records, medication logs, academic records, driving records, and a Neuropsychological evaluation that includes a Cogscreen AE.
Hope that helps.