Ok, far from scientific. But I've noticed the only posters that threaten t o killfile are ones that I'd identify as just a little more than right of c enter. This is intriguing. Perhaps a common attribute among this crowd is a propensity to stick their head in the proverbial sand.
Killfiling someone isn't a declaration of victory. It's a declaration the one doing the killfiling is thin-skinned and easily offended.