How is defending another person's right of association and right to make a livelihood within their moral code being a "fanatic"?
you have no clue what the "right of association" is, do you?
Lemme help you out with that. The right of association has not one single precedent that suggest that it allows for businesses to
refuse service based on race, creed, or sexual preference. Quite the opposite, in fact:
NAACP v. Claiborne Hardware Co., 458 U.S. 886, 907-15 (1982) (concerted activities of group protesting racial bias); Healy v. James, 408 U.S. 169 (1972) (denial of official recognition to student organization by public college without justification abridged right of association). The right does not, however, protect the decision of entities not truly private to exclude minorities.
In other words, entities which are public, such as businesses, do not share the same protections from nondiscrimation laws that entities that are private, such as clubs, do. So, you are, in fact, defending a businesses "right" to behave contrary to constitutionally based law. The very definition of a fanatic is to encourage ignoring the law for some rigid set of personal beliefs.