It was his opinion, now to be honest I'm looking up the context in which it came out. Just because it's not a popular opinion doesn't make it invalid or wrong per say. You don't have to like milk or a color but that's not the end of the world.
Yes, it seems some people were offended. Good, they do need to exercise that right but they can't police the thoughts of others. If you choose to not support a business because of company policies fine. If because of how they feel, that's your prerogative. Although, I sadly feel that the majority of the LGBT protesters have in the past been their own worst enemies. To want to be equal in the eyes of the law is good. Forcing everyone to like you and what you do behind closed doors is another thing. There's nothing wrong with not agreeing with everyone. It seems that the world has forgotten that at times. That freedom goes both ways.
EDIT:
Okay, seems that the original statement came from an interview for a religious publication. Yes, it was in context for the values the owner upholds. Bully for him, don't be afraid to think and feel what you will. However, it doesn't mean you won't get served or hired if you don't completely agree with him.
Guy has an opinion. I have an opinion. I also have an asshole. I do believe most human beings do... They all stink.
"I may not agree with a word you say, but I will defend your right to say it."
That should sum it up. Can we get that quote republished across the country again? It's obvious they need to read it.