They're clearly not afraid to invite these questions because, perhaps, they've been under the impression that they were protected from above.
https://uk.finance.yahoo.com/news/nvidia-intervention-preced...
It's very easy to report your sales to a region and to dismiss questions about whether any of those sales actually represent chips bound for a sanctioned destination when you think that the people enforcing sanctions laws are under your thumb.
The amounts of money involved here are unfathomable and Nvidia isn't just a commercial player at this point; it's a political one.
Jensen flew too close to the sun and as smart a businessman as he is, it's pretty obvious that he probably never seriously considered the possibility that he was still just a pawn in a much bigger game.