I don't think so, because in my school days it was exactly the same and I had to listen to the same nonsense.I don't know why the classes have an assumption he's a slacker just because he's a gloomy person. It's not like he ever being seen ditching any task.
I can understand that it's easy to have prejudices but this kind of trope is overused and kinda unrealistic. Or... maybe Japan culture and mindset is just too different compared to my country.
New best girl acquired (ㆁωㆁ)