So I read up on this decision and before everyone breaks out the party hats and/or gets their panties in a twist, the decision covers a very specific piece of what happened. The baker was asked to make a custom, one-off wedding cake for the gay couple. He refused to do this but he did not refuse their business outright. The court ruled that making a custom cake is art and therefor protected under the 1st amendment. In short; the government can force you to sell your art to anyone willing to buy, but it can not force you to make art for anyone willing to buy.

Or to give a slightly less abstract example: If you had a Jehovah's Witness who was a painter, and a Muslim man commissioned her to do a painting of him and his wife celebrating Ramadan. If the painter says "no, I won't do that because I do not sell to Muslim people" that would be discrimination, but if the painter said "I can do a painting but not of that subject because it is against my religion" that would be okay.

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