This doesn't sound like you're talking from personal experience.
Saying that the highs bring genius is a gross simplification.
Yes, manic episodes can provide productivity boosts and huge amounts of energy but it doesn't have to go much further before it becomes impossible to complete a thought let alone a sentence, where you cannot sit still, where your judgement is severely impaired or you're suffering psychoses.
None of these symptoms (and there are many more) are particularly conducive to productive work, let alone breakthroughs.