"Illusory superiority" applies to a lot of things. Most people think they are 'good drivers' and that is where it starts.
For most cognitive tasks the people who do them probably did fairly well at school, possibly the top 5 or 10 percent and so assume they are smarter than 19/20 or 9/10 people...
I wouldn't be surprised if surgeons feel like 10X'ers compared to general practitioners, in a sense (of course, a surgeon "being 10X as productive as a GP" doesn't make literal sense).
... He said and about the profession with surely the highest concentration of arrogant and self-satisfied know-it-alls.