Although I mostly agree with the OP there are some differences between the average chiloni and a NK. First, the NK are responsible for a terrible chillul hashem and there is nothing worse a person can do. But that is not the main difference. The main one is that the NK do things that do not even serve their own purpose but do so only lehachis – to inflame the passions of others religious Jews. Burning a flag (or a Koran) never helped anyone and is done only to instigate. See, e.g., Pastor Terry Jones. Just as we have felt repulsed by Pastor Jones we feel repulsed by NK.
And this is the major difference between Satmar and NK in the eyes of the hamon am. No one feels negatively towards Satmar the same way they do towards NK even though they share almost identical ideologies towards Zionism. But Satmar does not engage in chillul hashem and does not do things solely to instigate. They have a mehalich they truly believe in and they act responsibly towards pushing their mehalich. You can disagree but you cannot feel negatively towards that.
And I think most American Chareidi Jews would feel negatively towards a chiloni who purposefully acts in a way to instigate against Torah. We do not hate the neighbor who doesn’t know any better and drives a car on shabbos but the neighbor who purposefully drives his car into charedi neighborhoods honking his horn down bar ilan street on shabbos only to instigate the frum are viewed negatively.