Loaded question/straw man/false dilemma. Newcomers who plagiarize don't really contribute (positively as the the question implies). They make the forum a worse place. The user was not banned for contributing, the user was banned for plagiarism. And the user obviously had a choice - plagiarism is not the only way to get ahead.

That's assuming (very generously) that you are indeed a different person and not just trying to troll the shit out of this forum with a bunch of sockpuppets on your way out.