This highlights an interesting theme I've been noticing a lot lately; that society seems surprised when someone who excels in one specific arena can be deficient in another aspect of life. For example, the football star who beats his wife, or the talented actor who can't manage his $millions, or (in this case) the fund manager who has been a terrible father.
Just because you are great at something doesn't mean you are a great person. Conversely, even if you aren't particularly good at anything, you can still be an excellent, wonderful person.