The wedding cake, not the baker, is held to speak

Evidence

A wedding cake, the petitioners declare, “inherently communicates that a wedding has occurred, a marriage has begun, and the couple should be celebrated.” More than merely communicating these things, Justices Alito and Gorsuch declare in their concurring opinion, “like an emblem or a flag,” the cake “is a symbol that serves as a short cut from mind to mind signifying approval of a specific system, idea or institution.” … The potential for compelled speech therefore rests neither on Phillips’s artistry nor on religious dictates about wedding cakes—there is no mention of cake in the Bible. Rather, the potential for compelled speech hails from Phillips’s belief that weddings, for which the cake is a synecdoche, are the hallmark of unions dictated by God and of investiture of this belief, by Phillips, in the wedding cakes that he makes. The cake speaks wedding; according to Phillip’s faith, only certain people are eligible for weddings; celebrating weddings of the ineligible goes against God. — Wendy Brown, In the Ruins of Neoliberalism, 234