Perhaps but it doesn’t take away from the fact that bi-polar disorder is a very real disease.
However, the messaging of society exacerbates the problem tremendously IMO.
Too often people are led to think they have a "disease" because people around them consider them as abnormal largely because psychology teaches such. In actuality, a depressive period...even a severe one... is often a part of life which can be overcome which character development and is instead medicated for years on end.
I agree that bipolar is being overdiagnosed these days, as was schizophrenia i the past. That’s just the way human beings, science, and medicine work. However, I have seen classic bipolar people who were of enormous ability, and if they had not been treated, we would have been deprived of their gifts. Bipolar illness is for real.