Not any reason though, the case didn’t change any of the protected classes like sex, religion, or sexual orientation. It just made it so a company can choose what “expressive work” they want to do, especially websites. So it’s legal to say you don’t want to make someone a custom website if you disagree with the contents of the website (ie a website that supports gay marriage), but it’s still illegal to refuse to make someone a website because the customer is gay. You can choose what you make, but you can’t choose who you sell it to