> everyone who contributes to a GNU GPL, licensed project, or creates a derivative work of a GNU GPL licensed project, must upstream their contribution – withou

> everyone who contributes to a GNU GPL, licensed project, or creates a derivative work of a GNU GPL licensed project, must upstream their contribution – without exception. That's entirely untrue. There is no such requirement in the GPL. Further, any license with such a requirement would be non-free. Since this whole article revolves around that point, it should be entirely discounted.