Very good read.
But...
In the end, it is not about eating (or eating a certain chicken sandwich).
Yes it is. The entire conversation between the two, their beliefs, their causes, their support - don't care about any of it. I don't care about gays when it comes to chicken sandwiches nor do I care about Christians either.
If Dan Cathy was giving money to groups that physically harm members of the LGBT community, then he should be chastised or run out of town until he stops doing so and renounces his actions.
But I don't think Dan Cathy was doing that. Therefore, I only care if his chicken sandwich is tasty and cheap, which it is both.