I'm addressing the words you wrote, mainly this idea that learned helplessness is a significant concern when diagnosing chemical imbalances. Learned helplessness is tangential to a proper diagnosis, there is still CBT and other techniques for developing coping mechanisms around mental health issues, but those cannot be utilized without first receiving a diagnosis.
For example, in the case of ADHD, it s clear that patients have a reduced dopamine receptor count. It's not just a chemical imbalance, it's structural. Medication is the only effective solution for severe cases, and the result is night and day. Knowing this helps me make better decisions around my diagnosis, and also alleviates the great shame and anxiety that come hand in hand with ADHD.
I don't wish to devolve into an argument and I apologize if my initial comment was too aggressive.