There is nothing dysfunctional about a single parent bringing up children. It wasn't like they never had a female presence in their lives because they had the nanny Gracy Rwaramba who they were apparently very close to. And by all acounts the kids seem very down to earth and grounded when they have been interviewed.
Hmmm, I think you are missing the point. People who pay women to bear them children with the deliberate intention of bringing them up without a mother's input from the outset are not making any attempt to consider the impact on the children. It's completely self serving and I honestly can't see how it's defensible.
I doubt we will ever agree.