I don't think that side thread is something new or fancy to talk about. It's the eternal question of if it's freedom to ban slavery or not. But for the free software users both BSD and GPL are quite equal, it's only in the territory of creating non-free software linking to free software that the difference matters.
GFDL is another matter and has more problems, but even that's not a good comparison to these "negative campaign" kind of things, it's just not very well crafted license regarding the uses that it ended up used at.