The problem is that there's so much overlap between the people who think that court decision was wrong and that the bakery should have had to bake the gay cake and the people who support Twitter's ban of Trump. If you think something is unfair/unjust/unconstitutional/whatever and that it should be undone/repealed/overturned, then you shouldn't argue for other things using that thing as precedent. It's dishonest to say both "Y is okay because X is okay and X is basically the same as Y" and "X isn't okay".