Cognitive overhead is the key word for me here - it can be just as difficult to reason about massively long function chains as a bunch of stateful classes, but usually in my experience an OO codebase follows conways law very tightly in that you get a history of how developers were split up - not discreet units of functionality with well defined interfaces. It’s hard to say something is objectively better, but it’s along the same lines to me as not buying a car from a manufacturer with a bad reputation.
