Nothing.

> We already have cases of punishing & re-educating bakers for adhering to their religious views on the subject, how much more so those who may face compulsion to perform a union they cannot religiously condone?

Clergy are not public accommodations and are not subject to non-discrimination law. Clergy in the US can still refuse to officiate interracial marriage for instance.

The bakers you're talking about were not "punished and re-educated for adhering to their religious views", they were punished for discriminating against a protected class in the state they operated in. Just as they would have been punished for refusing cake to an interracial marriage, even if condoning it were against their sincerely held religious beliefs.

But you really shouldn't worry about that: this SCOTUS decision only forces states to issue and recognise marriage licenses to same-sex couples, it does not force them to make sexual orientation a protected class.

And in all 29 states where sexual orientation still isn't a protected class, same sex couples can have a cake-less marriage in the morning because businesses aren't forced to serve them, and then get fired in the afternoon because their bosses can discriminate against them for reasons of sexual orientation.