Irrelevant - a CIO's job isn't to be a hands-on coder, it's to set a strategy and manage an organization. Companies do a good but if due diligence on that, which is why it's really hard to break into the executive ranks - you have to find an opportunity that can grow into leading a large team because no one will hire you to do so if you haven't before.

Purely by chance, the last place I worked that had a CIO title, my LOB CIO probably would have had a good chance at passing a Leetcode interview, despite managing 10,000+ people.