The publisher answered my complaint about the Hamid's story in their coursebook. Then I found a second problem: a test question that treats "Migrationshintergrund" and "Ausländeranteil" as the same thing. Here is how did they replied.
https://educatedkanak.liberta.vip/hamids-glow-up-and-sloppy-terms-what-the-publisher-said/
#GermanCourseBook
#Immigrationnarratives
#MigrationsHintergrund
#Ausländerteil
#BerufsSprachKurs
#Venting