User blog comment:MidoriGurrenFu/Why do people think Deku will become a villain/@comment-24403746-20181204191548

Because they are just fanfics, the world has a shizload of people and everyone has their own tastes.

Some people have a taste for seeing a tragic tale like some hero falling from grace to the extreme and witnessing that story. Other than that it really depends where and what you look up.