Interesting question. In theory I would say it's probably at least partly a symptom of the disorder bc often sound minded people experience poor judgement and decision making only when in the midst of an episode. More than a negative personality trait.

But if I were to be completely honest, I think that at least when it comes to myself, I see all of my bad behaviors associated with this mood disorder as character flaws... whether caused by a disorder or not, I take full responsibility and ownership for every stupid thing I have ever done. When depressed I probably would take Credit for the dumb stuff other people did too though, so my thoughts aren't necessarily very rational or logical. Idk.