While I agree it's probably uninteresting intellectually, it does have potential to be interesting emotionally. Not a lot of opportunities for HN to discuss topics such as divorce.
HN gets plenty of opportunities to discuss universal topics like marriage/divorce, parenting, and so on. But because those topics are so generic and so emotional, as you say, they tend to slide quickly into the unsubstantive-sensational sort of discussion rather than the thoughtful-curious kind that we want.
We've learned over the years that discussion on such universal themes tends to be better when the initial submission has a lot of information in it, and also is alloyed with something unexpected rather than entirely generic. I don't think the current story has those qualities. In the first place, there's literally only one bit of information—already fully communicated by the title—so there's almost nothing to discuss; and in the second place, the story type is billionaire-blockbuster, which is about as sensational as these things get.
Previous comments on this point, if anyone cares:
https://news.ycombinator.com/item?id=8348372
https://news.ycombinator.com/item?id=23087737
There's also the old pg phrase "intensely but shallowly interesting", which I think probably describes this story, no?
The worst thing to post or upvote is something that's intensely but shallowly interesting: gossip about famous people, funny or cute pictures or videos, partisan political articles, etc. If you let that sort of thing onto a news site, it will push aside the deeply interesting stuff, which tends to be quieter.