If the opponents of that law were arguing that the Indiana statute tightens the federal standards a notch too far, that would be compelling. But that’s not the argument the opponents are making.
Instead, the argument seems to be that the federal act’s concrete case-by-case approach is wrong. The opponents seem to be saying there is no valid tension between religious pluralism and equality. Claims of religious liberty are covers for anti-gay bigotry.
This deviation seems unwise both as a matter of pragmatics and as a matter of principle. In the first place, if there is no attempt to balance religious liberty and civil rights, the cause of gay rights will be associated with coercion, not liberation. Some people have lost their jobs for expressing opposition to gay marriage. There are too many stories like the Oregon bakery that may have to pay a $150,000 fine because it preferred not to bake a wedding cake for a same-sex ceremony. A movement that stands for tolerance does not want to be on the side of a government that compels a photographer who is an evangelical Christian to shoot a same-sex wedding that he would rather avoid.
Brooks piece has a lot of suggestions on how to close the door on horses that have already bolted from the barn.