We don't know anything about his cheating and it shouldn't matter.
We don't know his relationship with his wife, what their stands on cheating even stands.
You can argue its an image issue, but thats a problem of the press and marketing and not that he might have cheated.
His wife is an adult and is for sure not poor, so its not a situation were she has to stay with him.
I do believe it either has to do with the whole spy story or he did something he really shouldn't have.
If, as a CEO, the location and interaction of your penis ever becomes well known, then you are failing as a CEO, outside of a few very specific cases.
I never mentioned cheating? Not sure why are you bringing it up.
I said that the missteps was having sex with subordinates and chinese spies.
Now start connecting the dots with Nvidia being one of the major advocates for relaxing exports to China and selling billions of GPUs to shady Singaporean companies that the chinese spy represented and you understand why the board finds him a liability.