Wasn't Google recently on the opposite end of this? They paid their engineers so much that some of them left because they had the financial security to take riskier options.
Learn everything.
I have a goal, it is to be better than average at every "skill".
Plus, yes, there are other goals than "not working".
Or, CEOs don't have the same set of options engineers have, or, CEOs are drawn from a pool with different preferences than engineers have, or...
Well, lots of other reasons your dismissal of the claim about engineers based on CEO behavior is unconvincing.