You're right -- we don't know. My interpretation of the article was that the AUTHOR seemed to imply that that was unbalanced, and my point in bringing it up was that it didn't seem right for the author to critique what is a balanced/not-balanced life, since it's different for everyone.
You keep equating "balanced/not-balanced" with "good/bad".
What do you mean by "balance" if you don't mean the normal definition of "engages in activities/pursuits from all aspects of life"? By the normal definition of balance Elon Musk is not leading a balanced life at all, but a dedicated and focused life. This is not a value judgement, it's perfectly reasonable to make that choice.
This idea that balance is different for everyone makes me think you are using balance to mean "fulfilling" or "happy"?
