The article was entirely correct. The error was by the florist who should immediately have stopped making wedding arrangements for the general public as soon as same sex marriage was legalized.
Her answer should have been "I no longer make floral arrangements for weddings. I'll sell you the flowers but the arrangement is up to you. "
Her answer should have been "I no longer make floral arrangements for weddings. I'll sell you the flowers but the arrangement is up to you. "