I'm not suggesting anything about whether a business should or should not be allowed, etc, etc, etc. My proposal centered around whether it was important, not whether it was okay or wrong.
Well, it was important enough for you to post about, so surely you can empathise as a disproportionately involved uninvolved person, to that degree.

Obviously this is 'an issue' in all sorts of legal matters. The law may or may not be an ass (or arse), but
access to the law. If I'm a person of immense means, and you give me some petty injury, I can sic my feral attack lawyers on you and not give it much further thought. If I have significant but not unlimited resources, I might have to weigh up whether it's the hill I want to die on. If lack those, it's not even an option for me. But there's a public-policy question in there, so whether or not the litigants were personally wise to pursue it seems in that sense to be a separate matter, and one less amenable to comment on.
In the Irish case, we're talking about a blatant "going out of their way to be oppressed".
Note that Ashers is owned by a Belfast 'evangelical and born-again Christian' couple. i.e., Prods. Thus, likely feel extremely oppressed by being characterised as part of an "Irish" case.

Obviously here it's not a wedding cake per se at all, it was a political point in itself. I'm honestly unclear if Lee just wanted the fanciest such cake for his point, or from his most local or most preferred bakery, or actually sought out the baker most likely to refuse in order to make a further one.
In the course of researching some of these, I did find a case of a florist getting sued for not selling flowers for a gay wedding. That is not apparently a going out of their way, the couple had been long time customers of the florist in question. Which in some ways might have felt more of a betrayal and humiliating.
Doesn't sound like a request to provide "personally offensive customisation" either, so yeah. Ouchies.
And wedding cake at that! Have you ever dealt with a bride not getting exactly what they want? It is an affront to Gawd!
Whyever should be we be deprived by the mere Incidental of discussing all-male couples (in each of the cases I've actually bothered to look at at least) of someone riffing on the "bridezilla" trope?
Now multiply that by gay bride.
Oops, I typed too soon. Very OSC-affine, though!