I have to disagree with your logic and your conclusions on this point. For me, this is about human rights, equality, and anti-discrimination. What the Supreme Court is being asked to uphold is its decision that same-sex couples can't be treated differently just because they're same-sex couples and not opposite sex couples. The argument that the couple in question could simply have gone to another bakery sounds logical, but it's the same logic that suggested that during segregation that black diners could simply eat at another restaurant.
It is disingenuous to equate what blacks endured and suffered by law with the tyranny that activist homosexuals are trying to enforce on those who do not agree with their lifestyle. What about the freedom to practice what one believes...so long as that is not doing harm to others. There was no harm done to the gay couple that sought the services of that bakery....It is not a matter that is about "rights, equality or discrimination." This is about forcing everyone to condone, embrace, and approve something that is deemed by many to be reprehensible and morally aberrant.
I guess that's where we'll need to agree to disagree, my view is that we're either equal or we're not.