I don't think Cory is writing for the machine learning community.
Cory is trying to inform people that AI and ML aren't a magical solution to all our wasteful systems because in some cases we need to throw away the system and start again, and AI can't tell us that. It can only tell us the best way to run the current system. That's what he means when he says AI is conservative.
It's not surprising at all if you understand AI but most non-tech people don't.