Ah, the 'Talibangelicals' are at it again. Business is business and a gay's money is just as good as everybody elses
You're an idiot. People voluntarily deciding not to buy something is not 'Talibangelical,' and you can quit using that gay term now.
No, but people willing to go to such lengths to control how other people choose to live their lives, to no detriment to anyone else is rather extreme, and un-libertarian, I might add, and it's surprising that it doesn't bother you.
No, it is not un-libertarian to boycott something for any reason at all.
Libertarians often use boycotts (a simple exercise of choice in a free market) as a hypothetical solution to criticism of their policies.
Example:
Libertarian: Businesses should be able to hire or not hire anyone they want.
Critic: So a business owner should be allowed to not hire Blacks because he is a racist?
Libertarian: Sure, but he will have to live with the fact that most people would refuse to do business with him (a boycott).
