Anyone should be allowed to say what they do with their labor if it's against their values. That's America, that's how it's always been.
You can't force a Construction Company to build a Porn Shop, so why do people think they can force people to create a "particular type" of cake?
(because leftists are tyrants and are trying to destroy America as we can clearly see from all their various anti-American actions)
They aren't denying the "persons" service, they are refusing to create a particular type of product with their labor, so the claim of "discrimination" especially under the law simply cannot be made (at least it being intelligent).