This is an interesting image...
View attachment 116120
I disagree with the first two items on the slope being disapproved of.
I agree with gay marriage, the only issue I have is that I think they should have called it something else, because they are appropriating a religious ceremony between a man and a woman... But that's a minor point. Although it could be argued that the word marriage in itself does not imply male or female, it implies closely mating items.
Objecting to baking them a cake is something I also disagree with, but I support people's right to make their own decision whether they should bake the cake, or not... I'm obviously conflicted on this one! The solution is to find a supplier willing to bake the cake... QED ...
To argue that the first two, the gay marriage and the baking of the cake, are leading down that slope? That's a bit of a stretch... But the slope definitely exists, and I wonder what will appear on the slope next!