That's the thing though. They aren't pro life. They are anti sex that they don't approve of.

Sure, but they don’t think of themselves that way. They see themselves as trying to stop what they see as murder. Yes, they ALSO don’t want people having sex that they don’t approve of, but data clearly shows higher rates of unplanned pregnancy in states that don’t teach people how not to get pregnant. So if they truly see abortion as horrendous, they should be trying to stop unplanned pregnancies before they occur.

Pointing out that dissonance can help them see the flaw in their reasoning, if they’re introspective enough to attempt consistency in their views.

(Source: My own life story, having grown up as the sufficiently introspective “pro-lifer” shown the flaws in my thinking as part of a long journey from a conservative youth to a progressive adult. 😅)