Nothing gives some members of JWD a raging hard-on quite like a gay topic.
Looks very like a short term win for the baker if you read the grounds for the decision: it wasn't about protecting Masterpiece's right to freedom of religious belief but about the fact that Colorado was hostile to their religious views, describing them "despicable". It was this that was impermissible. The ruling does not settle the wider issues referred to in this thread.
If the USA were to allow bakers, photographers, MC, musicians, venues to say no to legal gay weddings on religious grounds, are they to post "Heterosexuals Only" in their shops and on their websites? I'd rather know than ask and be refused...
For the record, I think marriage and weddings are an anachronism.