I'm curious, has siding with open-source ever actually hurt anyone? It's like saying I believe everyone should be able to use my product, and I'm going to work hard to make that possible...
It's also possible contributors who have been blocked from other projects would think this is one is blocked as well and just avoid all SourceForge projects.
Making political statements with your open source project releases leaves your project, and now political views, completely open to the community.
That is what they wanted, and that is what they will get - good or bad.