Hardly. A baker is free to say they won’t bake a giant swastika cake, or a massive ejaculating penis cake. They’re allowed to pick and choose what they’ll bake, but not who they bake for. If a straight couple wants an ejaculating penis cake, and that offends the baker they don’t have to make it, but they can’t ban the straight couple for being straight. If a guy couple wants a typical wedding cake saying, “Jane and Jill 4 Ever” on it, that’s not something they can reasonably refuse. If Jane and Jill want a swastika cake, they’re shit out of luck.