conscience of a hacker

After reading through "Conscience of a Hacker" I noticed the author repeated the phrase, "They're all alike." He seemed fairly irritated by people in society constantly judging him. The author's perspective seems to show how much he despises adults. A certain point that caught my attention was, "Damn kid. Probably copied it. They're all alike." Teachers often want students to show their work although there are kids who already understand the topic; if a student doesn't show their work, the teacher will assume they cheated.