Many people asked the same question, why apologize and say "I hurt my family etc", he should've said, "My wife and I had agreed that my extra-marital affairs were totally fine..." ?
As someone who lives in Asia, there are quite different attitudes towards this kind of thing, but an emotional love affair is still really off the table even if visiting sex workers isn't, so I don't think it's jut a puritan thing?
One tells the people that you made a mistake and seek forgiveness, the other challenges the entire institution of marriage which is shots fired in puritanical America.
Unless you actually want to get into battle over what marriage is, is it worth it? There are no doubt some HN users that would love the battle, but I suspect someone who rose up to run a trillion dollar company is not the type of person who wants to sit around debating social norms day in, day out.
Why not make up the bullshit and move on with life?