K-cup: Your social responsibility does not include imposing your will on others. It does include Live and Let Live. In the case of rebuking someone committing a sin, that is not your will at all, but Hashem’s will.
Live and let live is a very non-Jewish concept. Jews very much must judge the character and others and reject unsavory characters. Tochacha is an obligation not an option and rejecting those who we must reject is an obligation.