Because he's just a kid and most likely hasn't heard/fully understood that plagiarism is a serious crime. We don't want to shun people away from the server forever. If he can learn and improve/make his own content then I don't see why he shouldn't re-apply. In the past if this has happened and they even re-apply weve denied the application, even if it wasn't plagiarized that time. So to some (smaller, albeit) extent were already doing what you suggested. it's not like we don't completely ignore the fact that they plagiarized either! It's definitely a key factor in determining whether to accept or not.
