Also putting an open source project out there doesn't absolve you of all social obligations simply because it's free. You can't say "well you are free to not use it, then it doesn't affect you at all" because that isn't true. By making and publicising this project he is actively discouraging other similar projects from happening - ones that might have less toxic leaders.
I should write a blog post about that because it seems to be an extremely common misconception.