A photographer is a public business and should serve all members of the public despite sexual orientation.
The photographer should not be compelled to make a blog post celebrating same sex marriage unless this is part of her product that is being sold to the couples. As it is a promotional item outside the service purchased by the couple, she should not be compelled to do so.
It is rational that a business can be compelled to serve people but also free to make that service terrible. For instance, it should be against the law to treat black people in a restaurant with utter disrespect in order to have them go somewhere else, that would be exploiting a loophole and in contradiction with the purpose of these laws. Similarly, the photographer would be engaging in discrimination by using her business to make same sex couples feel unwanted or unwelcome.
Why not just simply accept the fact that something as particular as wedding photography doesn't need government dictating people doing something against their religious beliefs?
Free exercise rights don't die off just because you sell something, and all businesses are not true public accommodations, despite what progressives want.
but no religious Test shall ever be required as a Qualification to any Office or public Trust under the United States.
Public accommodation is a public trust.
Not even close. PA's are not government functions.
Nobody takes right wingers seriously about serious arguments or the law.
Operating in public accommodation is a privilege not a right under our form of Government.
Under
U.S. federal law, public accommodations must be
accessible to the disabled and may not discriminate on the basis of "race, color, religion, or national origin."--https://en.wikipedia.org/wiki/Public_accommodations_in_the_United_States