It seems to me that the gist of the article is to question whether mental models can be effectively transferred verbally, rather than their existence? I agree w

It seems to me that the gist of the article is to question whether mental models can be effectively transferred verbally, rather than their existence? I agree with you, sometimes verbally conveyed theory is quite useful and can speed up building mental models. But maybe the fallacy is just that people tend to overestimate the benefit of this aspect (hence buy self-help books etc)?