Implying that someone has a lot of problems or is troubled is obviously entirely subjective.

There is no test that can confirm a diagnosis of Bipolar. So to claim it is biological AND will never go away, that is crazy talk. If the therapist has no data to back this up, it's just unsubstantiated opinion. Just to be clear, I am not saying the afflictions of mania and depression aren't real, just that causal factors are poorly understood.