Calling refusal to bake a wedding cake “refusing to serve” is a lie. They refused to extend the services they provide to everyone to include a special cake in celebration of something they felt uncomfortable about. If they had refused to let the gay couple into their shop or to sell them a bagel that would be wring. But to sue them for this is not being a champion civil rights, its being a champion of persecuting others for not celebrating your life style.
Which is what got them into trouble in the first place. Sexual orientation is a protected class in Oregon.