“Nobody in any business has to. This is not about “cakes” , If I make furniture and two homosexuals come in and I believe God’s Word ( Leviticus) that they are an abomination to God, I can deny service!!”
I don’t think the ruling says that.
If they wanted a normal table, you could not refuse them.
If they were demanding you make an engraving on the furniture celebrating their nuptials, you could refuse them.
And that's basically what the baker said - He didn't refuse their service because "they were gay". They wanted him to bake a cake which, as you said, "celebrated their gayness". I think I even read somewhere before that one of them had used his bakery before.