Answer:
I don't know, since I haven't read the story,, but I would like to guess it's because he is afraid that they would target nim next.
Technical writing is the practice of documenting processes, such as software manuals or instructional materials. Traditionally, it was limited to user manuals of some sort.
Frankly, this definition has become outdated. Technology moves quickly, and lexicographers are often left playing catch up.
He believes that middle and upper class black Americans are primarily interested in effacing their history, background and culture and want to copy white people and for example as poets be like white poets and men like doctors.,lawyers etc are often marrying lighter skinned women than themselves.