The captain of the doomed flight ET302, Yared Getachew, was a graduate of the highly competitive Ethiopian Airlines Aviation Academy, and had more than 8,000 flight hours — a respectable total. “Yared was a great person and a great pilot. Well prepared,” a former Ethiopian Airlines training captain told me.
Doesn't sound as if he acquired his 8000 + hours on a crop duster.
In addition: Your statement that he was 28 doesn't quite jibe with what the NYT has to say about him[2]
By the time he was 29, Yared Getachew was the youngest captain at Ethiopian Airlines. Despite his relative youth, he had spent a decade with the carrier, eventually piloting wide-body jets that crossed continents and oceans.