No, but enough people do that it's an important consideration.

I don't mean that a "little guilt by association with anyone saying politically incorrect things" is enough to immediately roll back whatever one was doing. But it's enough to reevaluate. And, on reevaluation, it added more weight to a damning line of thought that already existed.

So I've weighed both sides and found yours wanting. Your hostile reaction isn't doing you any favors. In fact, it convinces me all the more that the path I'm turning away from, the one where I introduce friends to Less Wrong, was not a worthwhile path.