“They were attacking my faith. It bothered me to the core,” said Sara, a Southern Baptist who identifies as pro-life. “Because I had never viewed [IVF] as wrong, as anything other than beautiful and bringing another life into the world. … I’ve actually had a lot of friends pray for me and encourage me and help me along in the process.”
You may be overestimating how familiar they are with the specifics of IVF. It could be perceived as simply as “IVF means more babies, which is good, because I want babies. But abortion means less babies, which is bad.”
If those people like that perception, they will resist or deny any further detail that would jeopardize those perceptions to remain willfully ignorant, especially if they have utilized IVF themselves. The cognitive dissonance would be too strong otherwise.