I believe Will Smith is going thru a crisis. He laughed at the joke, then his wife said something to him and he turned into an attack dog. Jada has alopecia and shaves her head, yet she has a 5 oclock shadow all around her head. They sell plenty of medications and shampoos to treat alopecia. She has money. She can handle it. I think for her it's to get pity and attention. And I think she has Will Smith on a leash while she bangs other guys openly.
For Smith to do that and then cry all over the place later says to me he has issues and needs to seek help as he is close to an implosion.
I tend to agree with you rather than those who say that it was staged. I know he is an actor but his behavior afterwards from the moment the joke was told is concerning.
This is the reality of it. Chris Rock is not The Rock.