Why are Pro choice groups upset about Tebow's "choice" to be a part of a superbowl ad.?

When groups like NOW want to silence people like the Tebows, they’re doing so to protect their own turf. The ad asks people to choose life, not to ban abortion. If NOW really was pro-choice, they’d see nothing invalid about showing the end result of one choice and the faith that carried the Tebows from that terrifying diagnosis to the pinnacle of athletic and scholarly success. Tebow represents hope in the midst of hopelessness. NOW doesn’t want people to have hope; they want women to buy abortions, and this ugly response has made that crystal clear.