There is not a blanket refusal of services to "Christians," "Atheists" or what ever other classification we can come up with. What is being discusses is a very narrow good/service to something that some people find distasteful, so they would prefer not to take part in one.
That's what's being discussed, as if this were a narrow law for protecting religious cake-bakers. Maybe that's what they have in mind when they write this stuff. But it also will protect doctors who refuse to see adopted children of gay couples (this has already happened in Michigan thanks to the federal RFRA). The law they passed in Indiana goes further than the RFRA and other religious freedom laws across the country, which prohibit intrusions on religious freedom by the government. This one extends that policy to include not only to protection from government, but similar "intrusions on religious freedom" by private parties., which necessitates the removal of the "anti-discrimination" window dressing that the prior religious freedom laws have. Before Indiana passed the law, it was sent a letter by 30 law professors, pointing out the likely consequences:
The proposed law seeks to override this reasoned balance among rights by bluntly and categorically granting
religious liberty rights a special status. In so doing, the proposed law jeopardizes parallel compelling state interests such as public health and safety, equality, and other fundamental liberties. What is more, without language that prohibits the shifting of the costs of religious liberty rights secured under the state RFRA to third party rights-holders that do not share the religious beliefs of the claimants, the proposed RFRA risks exposing the state to valid claims that
it has violated Article 1, Section 4 of the Indiana Constitution, a provision that prohibits the law from preferring religious over non-religious policies and practices. Further, adopting a measure such as the proposed RFRAs, one that creates a legal mechanism by which the costs of religious liberty may be shifted to third parties, raises serious Establishment Clause concerns under the federal Constitution insofar as it risks governmental endorsement or support of religion, and can be reasonably read as the state advancing religious interests. The use of state power in the services of religion or religious interests clearly runs afoul of the Establishment Clause of the U.S. Constitution's First Amendment and of Article 1 of the Indiana Constitution.
In our expert opinion, the clear evidence suggests otherwise and unmistakably demonstrates that the broad language of the proposed state RFRA will more likely create confusion, conflict, and a wave of litigation that will threaten the clarity of religious liberty rights in Indiana while undermining the stateâ(TM)s ability to enforce other compelling interests. This confusion and conflict will increasingly take the form of private actors, such as employers, landlords, small business owners, or corporations, taking the law into their own hands and acting in ways that violate generally applicable laws on the grounds that they have a religious justification for doing so. Members of the public will then be asked to bear the cost of their employer's, their landlord's, their local shopkeeper's, or a police officer's private religious beliefs. As we have learned on the federal level, RFRAs do not "open a door" to conversation, but rather invite new conflict that takes the form of litigation. This collision of public rights and individual religious beliefs will produce a flood of litigation, whereby Indiana courts will be asked to rebalance what has been a workable and respectful harmony of rights and responsibilities in a pluralistic society.
They also pointed out the wave of litigation that has already followed the federal version of the RTFA:
As of mid-February, 2015, 100 lawsuits have been initiated under the federal RFRA challenging terms of the Affordable Care Act. Similarly, scores of cases have been filed in which employers have sought an exemption from sex or sexual orientation based discrimination protections; business owners have sought to justify refusals of service to members of the public on the grounds that doing so would violate their religious beliefs; employers have terminated employees because the employeeâ(TM)s private conduct offends the employerâ(TM)s religious beliefs; and licensed medical providers have refused to treat some patients, in violation of professional standards, because such treatment would violate their religious beliefs.
After the Indiana law was passed, the "First Church of Cannabis" immediately filed paperwork and successfully gained state approval as an official religion- theoretically protecting its "religious sacraments" [*cough cough*]. That's surely something the authors of the law weren't thinking about, but cake-bakers across Indiana will stand to benefit yet again.