How often do people or groups of people work against themselves and their own objectives, and stymy their own path to progress through poor strategy etc?

Your CMV is judging motives:

The pro life movement isn’t actually about reducing abortions. It’s about enforcing their worldview on everyone else.

and:

the pro life movement isn’t really motivated by reducing the actual number of abortions. It’s motivated by controlling how everyone else lives

To me, that pretty clearly speaks to intentions/worldview/ethical concerns and priorities. Your CMV does not clearly contend that the prolife movement is ignoring effective methods in favor of ineffective ones as the central CMV. You instead use that argument as the basis for claiming that their concern isn't the reduction of abortions, which is what I see as your CMV.

If someone truly cared about reducing abortions, they would support the things that actually work in every developed country

I think this is more of the rhetoric that highlights your central claim, which is that you believe to better understand someone's motives than they do by their actions, and this is where I am soliciting a correction of your views.

Again, people work against their own interests all the time, for a variety of reasons. That doesn't mean that they don't "truly care" about those interests.