As far as I'm aware, it was the bride that had the issue with the bridesmaids arms, not the actual bridesmaids themselves.
As far as the linked story in the OP, I'm quite pleased to see some of the reactions that got reported on from the people graduating, but the very fact that the service was offered … you just know there will be someone that enquires about it.
If you're that unhappy with the way you look, changing a picture of yourself to look different isn't going to help that.
Sadly body image these days is a big thing (ironically).
Mark