I sympathize with that point of view, and I think e.g. discriminatory preachers and wedding photographers are protected by the 1st Amendment (and rightly so). However I find myself fairly indifferent on the topic of wedding cakes (and gay marriage, for that matter). Baking a cake is not a religious act; it is a mundane service provided in exchange for payment. No one has objected to baking e.g. Super Bowl party cakes, even though those don't honor St. Paul the Judgmental Ass either. Lots of other mundane service providers, like mechanics, taxi drivers, grocers, etc. might like to reject the custom of those of particular races or religions, but we have laws against that too. There are well-known reasons for those laws; we don't live in an ahistorical libertopia.

Still, yours is an salutary consistency. My original statement wasn't directed at you but rather at the sort of SV person who "boycotts" Indiana and North Carolina but still talks about the "rights" of a social media service.