My understanding of the use of "mindkilled" is that people who can be so described are incapable of discussing the relevant issue dispassionately, acquiring an us-vs-them tribal mentality and seeing arguments just as soldiers for their side. I really don't think that this applies to the topic of abortion on LW, which can be discussed dispassionately (much more so than in other places, at least). This is quite compatible with the possibility that the LW consensus is biased and wrong, which is what you are suggesting.