Selective service based on discrimination for things like sex, sexuality, race, national origins or religion does indeed abridge the rights of those being discriminated against. And are protected precisely because it's so easy to set up communities that push out sections of their population via refusal of service.the First Amendment does not protect BELIEFS. Read it carefully. It protects the FREE EXERCISE of those beliefs.
If a baker feels that he cannot, in good conscience, bake a cake for a specific wedding, then he is not abrogating anybody's rights. He is not forcing anybody to do anything against their beliefs. At most he is refusing to allow someone to force him to do something against his beliefs.
If his choice is...do the wedding or cease to do business with anybody, then that is forcing him to do the wedding; abrogating his religious rights.
That gay couple has a choice; they can get their cake elsewhere. Or not have one. Or make one themselves. It's the same choice I would have if I wanted a bakery to make a cake that is artistically repugnant to the owner, and he refuses out of sheer aesthetic disgust. THAT would be acceptable...
but refusing to bake a cake because doing so would violate his religious principles, a right guaranteed to him by the constitution?
I don't get this argument at all. It scares me, frankly.
If making a wedding cake for two men or a man and a trans woman or a Jew or someone in a wheelchair or an atheist or an interracial couple is too much for your religious sensibilities then get out of the public sector and become a hobbyist. Because you should have no right to operate under the BBB standards.