While the local Chick Fil A owner says ““We are a family of deep Chicago roots – my husband and I both came from
city worker families (teachers, police, laborers) and Steve is a city
worker,” she noted. She also said they’ve supported, hospitals, schools,
churches and even LGBT groups.” – really?  I would like to see where and how she made a LGBT donation last year.  Still, a portion of all food sold goes to the CEO who then pumps a couple million a year into the anti gay movement.

Sure. We all have freedom of speech. And Chick Fil A and many other businesses may be against gays. But yet there is a debate about whether or not people should patronize Chick-fil-A restaurants.

If
a corporation openly supported organizations dedicated to racist or
religious discrimination, would those who support Chick-fil-A support
such a business?

Probably not openly, but their desire to support an openly anti-gay corporation shows their bigotry nonetheless.