Wedding cakes, are specialty created items, they arent just sitting in the store. They also come with catering which is compelled speech to attend a wedding.
You get it, pretend you don't though.
Do you also think cake owners should make nudie cakes, cause some refuse them also as well as other specialty cakes.
(Hint, creation, and speech)
There is also a fundamental matter of this being a case of free exercise, as you well point out even forced speech, repugnant to the somebody's good conscience to exercise their faith, as opposed to equal protection of citizens, two entirely different Constitutional subjects, of no relationship. Then, this troll launches into how bigotry is somebody's religion, now I suppose we conflate free exercise with made up, private religions, to skirt the law, as a legal argument (only on a message board), which no Christian is doing? Then there are tons of legal precedents that involve how private institutions are allowed to operate, by a host of various rules and standards customers, clients or members must adhere to. This is as if not to mention that preservation of somebody's First Amendment rights should be superseded by somebody's desire to eat homo or Satan cake?! Can we get any more trite? Why don't we simply burn the Constitution, get it over with?
Funny how, always at the bottom line, is something anti-Christian, from twisting scripture among false Christians, to twisting law into something make believe. Bottom line, what can you say? Some people are just very ignorant and make ridiculous arguments there's, equally, no sense in responding to, they rise to such a level of ignorance or falsity. And notice there was no response to how persecuting the Christian in free exercise could, legally, work both ways, bring the hammer down on the Satanists or anybody refusing to exercise for Christians. (Leave it up to Satanists to shoots themselves in the foot.)
It's a good and important subject you presented, and interesting, but one that will not be properly discussed here. You would at least think some of the liberal apologists could come up with something based in reality, actually respond to what was said. Don't hold your breath. You can only shake your head and wonder why you bothered to post anything, at all.