Mmm. Maybe. I think it might be because doctors and lawyers can more-readily afford their own plane. It’s not a cheap hobby.

…also because they’re the highest earning tier of the upper middle class, and Cessna’s are an extremely common manufacture with a lot of relatively low cost options.

Most of their customers are probably upper middle class types, very small regional airlines, and people who run charter businesses.

I’d assume that between the professional pilots, and the hobbyists, you’ll find the former has lower crash rates.

It’d be more surprising if their was a lot of garbage men, or teachers, who crash Cessna’s, or any plane.