I think most pro choice ppl, (myself one of them) think that abortion is needed, needs to be kept legal, needs to be protected and is a sensitive subject for people who have had one. But it's not something you celebrate like a birthday. For most people, an abortion happening is a bad thing. You can't have the baby, can't afford the baby, there's medical stuff, your scared, vulnerable. Etc. Not the whoo hoo, I get to be a part of the I Got An Abortion club.
Look at another link, from a different pro life group discussing a video. I saw this and thought, someone has to be punking them, this can't be a real pro choice ad.