I don't really understand the author's aversion to other people adding their own contributions and creativity. How exactly is it harming him? He can retain co

I don't really understand the author's aversion to other people adding their own contributions and creativity. How exactly is it harming him? He can retain control of the original -- it's not like anyone is forcing him to accept contributions. And indeed unless he explicitly allows it they can't even distribute an updated version of his project. If you put something out there, you should be flattered that people take enough interest to tinker with it.