The “I’m an artist” angle is a new one, and pretty creative. Since he offered to sell them other baked goods he has a good case, logically anyways.
Although, if ultimately forced to bake cakes for gay weddings, I think the best option is to fight fire with fire. Bake a good cake, then announce that the profits will be donated to a group dedicated to converting homosexuals to heterosexuals. He’ll never be asked to bake a cake for another gay wedding ...
I’ll make em a cake, $1 million with all proceeds to that group you mentioned.
Since I can imagine that he would do the most appropriate cake relevant to the wedding being done then his only choice in this case would be to make a fruitcake.
Excellent!