There's a difference between artistic work and standard commerce. You can't blanket ban people from your business because of their gender identity/orientation.

There's a difference between artistic work and standard commerce. You can't blanket ban people from your business because of their gender identity/orientation. Just like the cake case, they couldn't deny selling a cake to them but they could deny custom designing one, or writing a message that they disagreed with. Same situation here, they can refuse to custom design a website, but can't refuse off the shelf work because of their gender/orientation.