This sort of thing takes the wrong-headed laws, that forbid private preferences by private business, in an ever increasing array of circumstances, to their logical conclusion. We need to reexamine the whole premise that society can compel anyone to do business with anyone else. (I would be willing to make an exception with respect to the emergency room in a private hospital, or the equivalent; but there is no conceivable reason why a photography firm should be required to photograph anyone's "wedding" or mockery of a wedding, against their will.)
For a discussion of the underlying issue, see "Civil Rights" vs. American Freedom.
When people are free, only so long as they act in a manner that the Government dictates, they are not free at all. The idea that you wrong someone by simply & politely declining to do business with them is tortured, to say the least.
William Flax