I've seen a lot of hostility online against people with non-european names. The idea that open source contributors are measured solely on merit is something of a fantasy. The canonical example here is contributors with an Indian name - they face a lot of social flak regardless of merit. No, not every project does it, but the ecosystem itself is somewhat unfriendly to such people.

> Please keep the social justice fighting out of free software

What are you talking about? The FSF birthed this movement, and was functionally based on social justice issues. If you pay any heed at all to the 'four freedoms', that's definitively 'social justice fighting'.