What's the phenomenon like Dunning-Kruger where people think their expertise on one domain (like software development and operations) has any bearing on their knowledge in other domains like medicine or macroeconomics? Honest question.
So maybe you're underestimating abilities of some people to master multiple fields
If Elon Musk built a 3 star Michelin restaurant himself from scratch then yes I would classify that he has mastery of the fine dining industry. You could be an amazing chef but couldn't run a restaurant if your life depended on it. Just like how there are brilliant engineers that aren't good at being CEOs of a tech company.
That doesn't make us experts on stuff, but a human should have at least some understanding of a broad range of topics, including economics.