The difference is that your experiences didn't directly challenge any member of staff. You might have challenged some abstract rule or social norm, but you likely did not personally and publicly attack a teacher. This guy named names and went personal, he crossed a much bigger line. His "crime" was not to lampoon the official magazine, but to personally attack school staff. I don't think any school, as good as it might be, would have tolerated that (although they could have handled it better, as he pointed out).