God god, no.
There's very little he could ever accidentally tell someone that would matter that much.
Other than handing over very detailed schemas etc, there's almost nothing important he could tell them.
Maybe some future ideas and plans, maybe some government things about the Administration, it's small peanuts.
Nvidia is an operational success, their IP is embedded within deep layers of know how and expertise.
He's the 'father' of that org, he set the tone, they like him there.
Nvidia would risk being an Intel without him.