Review Detail of damdidum in Richest Man: Divine-Grade Reconstruct System

what's wrong with novels these days or is it just chinese authors that write dumb novels. MC just doesn't makes sense. Possessiveness over a girl doesn't make sense. Sports car idea doesn't make sense, he never thought about the fact that people will see. Shouting in the classroom just because he can understand math. The fact is that MC is unrelatable. Even the worst students know something but he seems like a totally illiterate person. Even the trend is now moving towards intelligent and somewhat relatable MC's.