@MigL I second your call to be careful with words, name-calling, and labelling, but, examine this:
as a reply to Phi for All's critique. Does that set a tone of respect, or an inkling of an axe to grind? If points are to go unaddressed, leave them unaddressed, or, what is the purpose of the disparagement?
The responses, assertions, and argumentation style used here deserved to be lampooned and harshly characterized. Again, I second your point to be careful and address the arguments, but there is a flavor of irrational disrespect coming through that perhaps cannot be well met with measured and reasoning counter-argument. Note "zero effort to quantify" a qualitative property: historical context. And in both prior responses PfA had couched things being in historical context! Irrational responses! I do think bigot is maybe too strong a word for what was a poorly formulated overgeneralization, but, TheVat artfully used it to illustrate a point, and zapatos drew an easy parallel to what was effectively name-calling/labelling by Dr Derp.
I do think it makes sense to police bad-faith behavior if that starts to come through in our verbal arguments. There is an absence of malice in either TheVat or zapatos's posts where they use the term; they are indirect, it should not bully down discussion such a usage.