Honestly, I don't think it's either stupidity or incompetence, nor do I think he is deliberately designing things to flame out by 2024.
Rather, I think it is part of a systemic problem with publicly traded companies in the United States that has developed over several decades but has gotten exponentially worse in the last few years. And that is the demand by the market that companies be focused on nothing but quarterly numbers. Companies need to innovate, to invest, and to think long-term in order to survive for the long haul. But the market actively discourages anything that does not produce immediate quarterly profits.
I don't think Chapek wants things to go south. But I think he views a date like 2024 as a "future problem" and that his focus must be on the next quarter.