The problem is actually that it has been thought through, extensively. The cruelty is the point. Also, nobody ever asked this "web designer" to design a website for a LGBTQIA+ wedding. This is a created farce, about a "what if". This person creates templates, and doesn't want LGBTQIA+ to be able to buy them as anyone else could. Conservative donors cherry picked this to ride it up the line to get their time in front of the corrupt, broken SCOTUS.
This allows a person to say that, if they FEEL that whatever their work is is a demonstration of art or self expression, they can limit who receives it... A.K.A. "I put love into the food I make at this diner I own, and my religion is for white, Christians only. We don't serve food to none of the other non-whites. You need to leave!"